/* ==========================================================================
   Kahur Tools — Main Stylesheet
   Dark theme, mobile-first, no external dependencies
   ========================================================================== */

/* === 1. CUSTOM PROPERTIES ================================================= */
:root {
    /* Brand colours */
    --color-accent:        #f0a030;
    --color-accent-hover:  #f5b450;
    --color-accent-dim:    rgba(240, 160, 48, 0.15);

    /* Surface scale (darkest → lightest) */
    --color-bg:            #0a0d12;
    --color-surface-1:     #131820;
    --color-surface-2:     #1a2130;
    --color-surface-3:     #222c3c;
    --color-border:        #2a3648;
    --color-border-hover:  #3a4e64;

    /* Text scale */
    --color-text-1:        #e8edf4;
    --color-text-2:        #8d9bb0;
    --color-text-3:        #556070;
    --color-text-4:        #2a3648;
    --color-text-5:        #6bb50f;

    /* Semantic */
    --color-success:       #3fb950;
    --color-error:         #f85149;
    --color-warning:       #d29922;
    --color-info:          #58a6ff;

    /* Category badge colours */
    --color-cat-payment:     #7c6af7;
    --color-cat-business:    #f0a030;
    --color-cat-investments: #3fb950;
    --color-cat-income:      #58a6ff;

    /* Typography */
    --font-sans:    system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono:    ui-monospace, "Cascadia Code", "Fira Code", Consolas, monospace;

    --text-xs:   0.75rem;    /* 12px */
    --text-sm:   0.875rem;   /* 14px */
    --text-base: 1rem;       /* 16px */
    --text-lg:   1.125rem;   /* 18px */
    --text-xl:   1.25rem;    /* 20px */
    --text-2xl:  1.5rem;     /* 24px */
    --text-3xl:  1.875rem;   /* 30px */
    --text-4xl:  2.25rem;    /* 36px */
    --text-5xl:  3rem;       /* 48px */

    --font-weight-normal:   400;
    --font-weight-medium:   500;
    --font-weight-semibold: 600;
    --font-weight-bold:     700;
    --line-height-tight:    1.25;
    --line-height-snug:     1.375;
    --line-height-normal:   1.6;

    /* Spacing */
    --space-1:  0.25rem;
    --space-2:  0.5rem;
    --space-3:  0.75rem;
    --space-4:  1rem;
    --space-5:  1.25rem;
    --space-6:  1.5rem;
    --space-8:  2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Radii */
    --radius-sm:  4px;
    --radius-md:  8px;
    --radius-lg:  12px;
    --radius-xl:  20px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
    --shadow-md:  0 4px 12px rgba(0,0,0,0.5);
    --shadow-lg:  0 8px 24px rgba(0,0,0,0.6);
    --shadow-accent: 0 0 0 3px rgba(240,160,48,0.35);

    /* Transitions */
    --transition-fast:   150ms ease;
    --transition-normal: 250ms ease;

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 740px;
    --gutter: clamp(1rem, 4vw, 2rem);
    --header-height: 64px;

    --container-pad: 16px;
    --container-pad-min: 8px;
}

/* === 2. RESET & BASE ======================================================= */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-text-1);
    background-color: var(--color-bg);
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

main {
    flex: 1;
}

img, svg {
    display: block;
    max-width: 100%;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover, a:focus-visible {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

/* === 3. SKIP LINK ========================================================= */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: 9999;
    padding: var(--space-2) var(--space-4);
    background: var(--color-accent);
    color: var(--color-bg);
    font-weight: var(--font-weight-bold);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    text-decoration: none;
    transition: top var(--transition-fast);
}
.skip-link:focus {
    top: 0;
}

/* === 4. TYPOGRAPHY ========================================================= */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text-1);
}

h1 { font-size: clamp(var(--text-2xl), 6vw, var(--text-4xl)); }
h2 { font-size: clamp(var(--text-xl), 3vw, var(--text-2xl)); }
h3 { font-size: var(--text-lg); }

p {
    color: var(--color-text-2);
    line-height: var(--line-height-normal);
}

strong { font-weight: var(--font-weight-semibold); color: var(--color-text-1); }
em     { font-style: italic; }

code, kbd {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--color-surface-3);
    padding: 0.1em 0.4em;
    border-radius: var(--radius-sm);
    color: var(--color-accent);
}

/* Prose: rich text areas inside tool sections */
.prose p  { margin-bottom: var(--space-4); }
.prose ul, .prose ol {
    padding-left: var(--space-6);
    margin-bottom: var(--space-4);
    color: var(--color-text-2);
}
.prose li { margin-bottom: var(--space-2); }
.prose strong { color: var(--color-text-1); }

/* === 5. LAYOUT ============================================================= */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.container--narrow {
    max-width: var(--container-narrow);
    padding-left: clamp(var(--container-pad-min), 3.5vw, var(--container-pad));
    padding-right: clamp(var(--container-pad-min), 3.5vw, var(--container-pad));
}

/* === 6. HEADER ============================================================= */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    background: rgba(10, 13, 18, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: var(--space-4);
    position: relative;
}

.site-header__logo {
    display: flex;
    align-items: center;
    gap: 0;
    font-size: var(--text-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-1);
    text-decoration: none;
    letter-spacing: -0.01em;
    white-space: nowrap;
}
.site-header__logo:hover { color: var(--color-text-1); text-decoration: none; }

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-accent);
    color: var(--color-bg);
    font-weight: var(--font-weight-bold);
    font-size: var(--text-lg);
    border-radius: var(--radius-md);
    margin-right: var(--space-2);
    flex-shrink: 0;
}

.site-header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-2);
    text-decoration: none;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: color var(--transition-fast), background var(--transition-fast);
}
.nav-link:hover {
    color: var(--color-text-1);
    background: var(--color-surface-2);
    text-decoration: none;
}

/* Language switcher */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 2px;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    padding: 3px;
}

.lang-btn {
    font-size: var(--text-xs);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.05em;
    color: var(--color-text-2);
    text-decoration: none;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}
.lang-btn:hover { color: var(--color-text-1); text-decoration: none; }
.lang-btn--active {
    background: var(--color-accent);
    color: var(--color-bg) !important;
    text-decoration: none !important;
}

/* Menu button (hamburger) */
.menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    gap: 5px;
    transition: opacity var(--transition-fast);
}
.menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-1);
    border-radius: 1px;
    transition: all var(--transition-fast);
}
.menu-btn:hover { opacity: 0.8; }
.menu-btn[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}
.menu-btn[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}
.menu-btn[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Dropdown menu */
.nav-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: rgba(10, 13, 18, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    min-width: 220px;
    z-index: 99;
    flex-direction: column;
    animation: slideDown var(--transition-normal) ease-out;
    margin-top: var(--space-2);
    box-shadow: var(--shadow-lg);
}
.nav-dropdown.nav-dropdown--open {
    display: flex;
}
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-dropdown__item {
    display: block;
    padding: var(--space-4) var(--space-4);
    color: var(--color-text-2);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}
.nav-dropdown__item:hover {
    background: var(--color-surface-2);
    color: var(--color-text-1);
    text-decoration: none;
}
.nav-dropdown__item.khh-active {
    color: var(--color-accent);
    border-left-color: var(--color-accent);
    background: rgba(240, 160, 48, 0.05);
}

.nav-dropdown__divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-3) 0;
}

.nav-dropdown__language {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4) !important;
    border-left: none !important;
}
.nav-dropdown__language .lang-btn {
    flex: 1;
    text-align: center;
    padding: var(--space-2) var(--space-2);
}

.nav-dropdown__section-label {
    padding: var(--space-3) var(--space-4) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--color-text-3);
}

.nav-dropdown__currencies {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4) var(--space-4);
}

.currency-btn {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1;
}
.currency-btn:hover {
    background: var(--color-surface-3);
    border-color: var(--color-border-hover);
}
.currency-btn--active {
    background: rgba(240, 160, 48, 0.15);
    border-color: var(--color-accent);
    color: var(--color-accent);
}
.currency-btn__symbol {
    font-size: var(--text-base);
    font-weight: var(--font-weight-bold);
}
.currency-btn__code {
    font-size: var(--text-xs);
    color: var(--color-text-3);
    letter-spacing: 0.03em;
    display: none;
}
.currency-btn--active .currency-btn__code {
    color: var(--color-accent);
}

/* Backdrop */
.nav-backdrop {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 98;
}
.nav-backdrop.nav-backdrop--open {
    display: block;
    animation: fadeIn var(--transition-fast);
}
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* === 7. HERO =============================================================== */
.hero {
    padding: var(--space-20) 0 var(--space-16);
    text-align: center;
    background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(240,160,48,0.08) 0%, transparent 70%);
}

.hero__title {
    font-size: clamp(var(--text-3xl), 6vw, var(--text-5xl));
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--color-text-1) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-5);
    line-height: 1.1;
}

.hero__subtitle {
    font-size: clamp(var(--text-base), 2.5vw, var(--text-lg));
    color: var(--color-text-2);
    max-width: 560px;
    margin-inline: auto;
    line-height: var(--line-height-normal);
}

.khh-logo{
  height: 34px;
  width: auto;
  display: block;
}

/* === 8. HUB FILTERS ======================================================= */
.hub-filters {
    position: sticky;
    top: var(--header-height);
    z-index: 50;
    background: rgba(10, 13, 18, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    /*border-bottom: 1px solid var(--color-border);*/
    padding: var(--space-4) 0;
}

.hub-filters__search {
    margin-bottom: var(--space-3);
}

.search-input {
    width: 100%;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-1);
    font-size: var(--text-base);
    font-family: var(--font-sans);
    padding: var(--space-3) var(--space-4);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
}
.search-input::placeholder { color: var(--color-text-3); }
.search-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: var(--shadow-accent);
}

.category-tabs {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.cat-tab {
    display: inline-flex;
    align-items: center;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-2);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-sans);
    padding: var(--space-1) var(--space-4);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}
.cat-tab:hover {
    border-color: var(--color-border-hover);
    color: var(--color-text-1);
}
.cat-tab--active {
    background: var(--color-accent-dim);
    border-color: var(--color-accent);
    color: var(--color-accent);
}
.cat-tab:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* === 9. TOOL GRID ========================================================= */
.tool-grid-section {
    padding: var(--space-8) 0 var(--space-16);
}

.tool-count {
    font-size: var(--text-sm);
    color: var(--color-text-3);
    margin-bottom: var(--space-6);
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
    gap: var(--space-4);
}

.tool-grid--related {
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
}

.tool-grid__empty {
    color: var(--color-text-3);
    text-align: center;
    padding: var(--space-16) 0;
    font-size: var(--text-lg);
}

/* === 10. TOOL CARD ======================================================== */
.tool-card {
    display: flex;
    flex-direction: column;
    background: var(--color-surface-1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 60%, rgba(240,160,48,0.03));
    pointer-events: none;
    border-radius: inherit;
}

.tool-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tool-card-link {
    color: inherit;
    text-decoration: none;
    display: block;
    transition: color var(--transition-fast);
}
.tool-card-link:hover,
.tool-card-link:hover * {
    text-decoration: none;
}
.tool-card-link:hover .tool-card {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.tool-card-link:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: var(--radius-lg);
}

.tool-card--coming-soon {
    opacity: 0.6;
}
.tool-card--coming-soon:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--color-border);
}

.tool-card__icon {
    font-size: 2rem;
    line-height: 1;
    margin-bottom: var(--space-4);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-2);
    border-radius: var(--radius-md);
}

.tool-card__body {
    flex: 1;
}

.tool-card__title {
    font-size: var(--text-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-1);
    margin-bottom: var(--space-2);
    line-height: var(--line-height-snug);
}

.tool-card__desc {
    font-size: var(--text-sm);
    color: var(--color-text-2);
    line-height: var(--line-height-normal);
    margin-bottom: var(--space-4);
}

.tool-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    flex-wrap: wrap;
    margin-top: auto;
}

/* === 11. BADGES ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    font-size: var(--text-xs);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.03em;
    padding: 0.2em 0.65em;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    white-space: nowrap;
    background: var(--color-surface-3);
    color: var(--color-text-2);
    border: 1px solid var(--color-border);
}

.badge--payment     { background: rgba(124,106,247,0.15); color: #a89ef7; border-color: rgba(124,106,247,0.3); }
.badge--business    { background: rgba(240,160,48,0.15);  color: #f0a030; border-color: rgba(240,160,48,0.3); }
.badge--investments { background: rgba(63,185,80,0.15);   color: #3fb950; border-color: rgba(63,185,80,0.3); }
.badge--income      { background: rgba(88,166,255,0.15);  color: #58a6ff; border-color: rgba(88,166,255,0.3); }
.badge--muted       { background: transparent; color: var(--color-text-3); border-color: var(--color-border); }

/* === 12. BUTTONS ========================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
    -webkit-appearance: none;
    user-select: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-bg);
    border-color: var(--color-accent);
}
.btn--primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-bg);
    text-decoration: none;
}

.btn--secondary {
    background: var(--color-surface-2);
    color: var(--color-text-1);
    border-color: var(--color-border);
}
.btn--secondary:hover {
    background: var(--color-surface-3);
    border-color: var(--color-border-hover);
    color: var(--color-text-1);
    text-decoration: none;
}

.btn--ghost {
    background: transparent;
    color: var(--color-text-2);
    border-color: transparent;
}
.btn--ghost:hover {
    background: var(--color-surface-2);
    color: var(--color-text-1);
    text-decoration: none;
}

.btn--lg { font-size: var(--text-base); padding: var(--space-4) var(--space-8); border-radius: var(--radius-lg); }
.btn--sm { font-size: var(--text-xs);  padding: var(--space-1) var(--space-4); }

.btn--full { width: 100%; }

.btn[disabled], .btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

/* === 13. FORMS ============================================================= */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
}

.form-label {
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-1);
}

.form-label .form-hint {
    font-weight: var(--font-weight-normal);
    color: var(--color-text-3);
    font-size: var(--text-xs);
    margin-left: var(--space-2);
}

.form-input,
.form-select {
    width: 100%;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-1);
    font-size: var(--text-base);
    font-family: var(--font-sans);
    padding: var(--space-3) var(--space-4);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
}

.form-input::placeholder { color: var(--color-text-3); }

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: var(--shadow-accent);
}

.form-input--error {
    border-color: var(--color-error);
}
.form-input--error:focus {
    box-shadow: 0 0 0 3px rgba(248,81,73,0.3);
}

.form-error {
    font-size: var(--text-xs);
    color: var(--color-error);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238d9bb0' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.875rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

.input-group {
    position: relative;
    display: flex;
    align-items: stretch;
}

/*
.input-group .form-input {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    border-right: none;
  
    flex: 1;
    padding-left: var(--space-10);
    padding-right: var(--space-10);
  
}
*/
/* If .input-group contains a prefix element, add left padding to the input */
.input-group:has(.input-prefix) .form-input {
  padding-left: var(--space-10);
}

/* If .input-group contains a suffix element, add right padding to the input */
.input-group:has(.input-suffix) .form-input {
  padding-right: var(--space-10);
}


.input-prefix,
.input-suffix {
    display: inline-flex;
    align-items: center;
    padding: 0 var(--space-3);
    background: var(--color-surface-3);
    border: 1px solid var(--color-border);
    color: var(--color-text-3);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    flex-shrink: 0;
}

.input-prefix {

    position: absolute;
    left: 1px;
    top: 50%;
    transform: translateY(-50%);
    height:     calc(100% - 2px);
    border:none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.input-suffix {
    position: absolute;
    right: 1px;
    top: 50%;
    transform: translateY(-50%);
    height:     calc(100% - 2px);
    border-radius: var(--radius-md) var(--radius-md) var(--radius-md) var(--radius-md);
    border: none;
    /*border-radius: var(--radius-md) 0 0 var(--radius-md);*/
    /*
    
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    padding: 0;*/
}

/* === 14. CALCULATOR CARD ================================================== */
.calculator-card {
    background: var(--color-surface-1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: clamp(var(--space-3), 5vw, var(--space-6));
}

/* === 15. RESULT BLOCK ===================================================== */
.result-block {
    /* Reserve space to prevent CLS — always present in DOM */
    min-height: 120px;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-top: var(--space-6);
    position: relative;
    transition: border-color var(--transition-normal);
}

.result-block--has-result {
    border-color: var(--color-accent);
    border-left: 3px solid var(--color-accent);
}

.result-block__empty {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 80px;
    color: var(--color-text-3);
    font-size: var(--text-sm);
    text-align: center;
}

.result-block__title {
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    margin-bottom: var(--space-4);
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-4);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
}
.result-row:last-child { border-bottom: none; }

.result-row__label {
    font-size: var(--text-sm);
    color: var(--color-text-2);
    flex: 1;
}

.result-row__value {
    font-size: var(--text-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-1);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.result-row__value--accent  { color: var(--color-accent); }
.result-row__value--success { color: var(--color-success); }
.result-row__value--error   { color: var(--color-error); }

.result-primary {
    text-align: center;
    padding: var(--space-6) 0;
    margin-bottom: var(--space-4);
}
.result-primary__label {
    font-size: var(--text-sm);
    color: var(--color-text-2);
    margin-bottom: var(--space-2);
}
.result-primary__value {
    font-size: clamp(var(--text-4xl), 5vw, var(--text-4xl));
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
}

/* === 16. TOOL HERO ======================================================== */
.tool-hero {
    padding: var(--space-10) 0 var(--space-8);
    background: radial-gradient(ellipse 100% 80% at 50% 0%, rgba(240,160,48,0.05) 0%, transparent 70%);
    /*border-bottom: 1px solid var(--color-border);*/
}

.tool-hero__meta {
    margin-bottom: var(--space-3);
}

.tool-hero__title {
    font-size: clamp(var(--text-xl), 4vw, var(--text-4xl));
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.02em;
    color: var(--color-text-1);
    margin-bottom: var(--space-3);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.tool-hero__icon {
    font-size: 0.8em;
    line-height: 1;
    flex-shrink: 0;
}

.tool-hero__desc {
    font-size: var(--text-lg);
    color: var(--color-text-2);
    max-width: 600px;
    line-height: var(--line-height-normal);
}

/* === 17. TOOL SECTIONS ==================================================== */
.tool-section {
    padding: var(--space-12) 0;
    /*border-top: 1px solid var(--color-border);*/
}

.tool-calculator {
    padding: var(--space-10) 0;
}

.section-title {
    font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
    font-weight: var(--font-weight-bold);
    color: var(--color-text-1);
    margin-bottom: var(--space-8);
}

/* === 18. FAQ ============================================================== */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.faq-item {
    background: var(--color-surface-1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.faq-item[open] {
    border-color: var(--color-border-hover);
}

.faq-item__question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-1);
    cursor: pointer;
    list-style: none;
    gap: var(--space-4);
    transition: background var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.faq-item__question::-webkit-details-marker { display: none; }

.faq-item__question::after {
    content: '+';
    font-size: var(--text-xl);
    font-weight: var(--font-weight-normal);
    color: var(--color-text-3);
    flex-shrink: 0;
    transition: transform var(--transition-fast), color var(--transition-fast);
    line-height: 1;
}

.faq-item[open] .faq-item__question::after {
    content: '−';
    color: var(--color-accent);
}

.faq-item__question:hover {
    background: var(--color-surface-2);
}

.faq-item__answer {
    padding: var(--space-8) var(--space-5);
    font-size: var(--text-sm);
    color: var(--color-text-2);
    line-height: var(--line-height-normal);
    border-top: 1px solid var(--color-border);
}

/* === 19. BREADCRUMB ======================================================= */
.breadcrumb {
    margin-bottom: var(--space-5);
}

.breadcrumb__list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-1);
    list-style: none;
    padding: 0;
}

.breadcrumb__link {
    font-size: var(--text-sm);
    color: var(--color-text-3);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.breadcrumb__link:hover { color: var(--color-accent); text-decoration: none; }

.breadcrumb__current {
    font-size: var(--text-sm);
    color: var(--color-text-2);
}

.breadcrumb__sep {
    font-size: var(--text-sm);
    color: var(--color-text-3);
    list-style: none;
    user-select: none;
}

/* === 20. TOAST ============================================================ */
.toast-container {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    z-index: 9000;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    pointer-events: none;
    max-width: 360px;
    width: calc(100% - var(--space-8));
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    background: var(--color-surface-3);
    border: 1px solid var(--color-border-hover);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text-1);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toast-in 300ms ease forwards;
}

.toast--success { border-left: 3px solid var(--color-success); }
.toast--error   { border-left: 3px solid var(--color-error); }
.toast--info    { border-left: 3px solid var(--color-accent); }

.toast.toast--leaving {
    animation: toast-out 300ms ease forwards;
}

@keyframes toast-in {
    from { opacity: 0; transform: translateY(12px) scale(0.95); }
    to   { opacity: 1; transform: translateY(0)    scale(1); }
}

@keyframes toast-out {
    from { opacity: 1; transform: translateY(0)    scale(1); }
    to   { opacity: 0; transform: translateY(12px) scale(0.95); }
}

/* === 21. DIVIDER ========================================================== */
.divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-8) 0;
}

/* === 22. ERROR PAGE ======================================================= */
.error-page {
    padding: var(--space-24) 0;
}

.error-page__inner {
    text-align: center;
}

.error-page__code {
    display: block;
    font-size: clamp(5rem, 20vw, 10rem);
    font-weight: var(--font-weight-bold);
    color: var(--color-surface-3);
    line-height: 1;
    letter-spacing: -0.04em;
    margin-bottom: var(--space-4);
}

.error-page__heading {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

.error-page__message {
    color: var(--color-text-2);
    font-size: var(--text-lg);
    margin-bottom: var(--space-8);
}

/* === 23. FOOTER =========================================================== */
.site-footer {
    background: var(--color-surface-1);
    border-top: 1px solid var(--color-border);
    padding: var(--space-8) 0;
    margin-top: auto;
}

.site-footer__inner {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    text-align: center;
}

.site-footer__tagline {
    font-size: var(--text-sm);
    color: var(--color-text-2);
}

.site-footer__copy,
.site-footer__built {
    font-size: var(--text-xs);
    color: var(--color-text-3);
}

/* === 24. UTILITY CLASSES ================================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border-width: 0;
}

.text-accent  { color: var(--color-accent); }
.text-muted   { color: var(--color-text-2); }
.text-success { color: var(--color-success); }
.text-error   { color: var(--color-error); }

.font-mono { font-family: var(--font-mono); }
.tabular   { font-variant-numeric: tabular-nums; }

.mt-auto { margin-top: auto; }
.mb-0    { margin-bottom: 0; }
.hidden  { display: none !important; }

/* === 25. RESPONSIVE ======================================================= */
@media (max-width: 600px) {
    .nav-dropdown {
        min-width: 240px;
    }
    .tool-card__footer { flex-direction: column; align-items: flex-start; }
    .toast-container { right: var(--space-3); left: var(--space-3); max-width: none; width: auto; }
    .result-row { flex-direction: column; gap: var(--space-1); }
    .result-row__value { font-size: var(--text-lg); }
    .khh-logo { height: 28px; width: auto; display: block; }
    .calculator-card {padding: 5px; width: 100%; max-width: none; }
    .result-block {padding: 10px; width: 100%; max-width: none; }
    .ci-table th { padding: var(--space-1) var(--space-1) !important;
}

}

@media (min-width: 768px) {
    .site-footer__inner {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        text-align: left;
    }
}

/* === 26. PRINT ============================================================ */
@media print {
    .site-header,
    .hub-filters,
    .site-footer,
    .toast-container,
    .btn--secondary,
    .btn--ghost { display: none; }
    body { background: white; color: black; }
}

/* === 27. SHARED CALCULATOR COMPONENTS ===================================== */

/* ── Form actions row ─────────────────────────────────────────────────────── */
.ci-form__actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-top: var(--space-6);
    padding-top: var(--space-5);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
}

/* ── Insights strip ───────────────────────────────────────────────────────── */
.ci-insights {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-top: var(--space-5);
    padding: var(--space-4);
    padding-bottom: var(--space-5);
    background: var(--color-surface-2);
    border-radius: var(--radius-md);
}

.ci-insight {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--text-sm);
    color: var(--color-text-2);
    line-height: 1.5;
}
.ci-insight__icon { font-size: 1rem; flex-shrink: 0; line-height: 1.2; }

/* ── Result actions (copy / share button row) ─────────────────────────────── */
.ci-result-actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-4);
    flex-wrap: wrap;
}

/* ── Collapsible schedule ─────────────────────────────────────────────────── */
.ci-schedule {
    margin-top: var(--space-6);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.ci-schedule__toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-1);
    background: var(--color-surface-2);
    cursor: pointer;
    list-style: none;
    gap: var(--space-4);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.ci-schedule__toggle::-webkit-details-marker { display: none; }

.ci-schedule__toggle-icon {
    color: var(--color-text-3);
    transition: transform var(--transition-fast);
    font-style: normal;
}
details.ci-schedule[open] .ci-schedule__toggle-icon {
    transform: rotate(180deg);
}

.ci-schedule__body {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* ── Data table ───────────────────────────────────────────────────────────── */
.ci-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.ci-table th,
.ci-table td {
    padding: var(--space-1) var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.ci-table th {
    font-size: var(--text-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-3);
    background: var(--color-surface-2);
    white-space: nowrap;
    padding: var(--space-4) var(--space-4) !important;
}

.ci-table tbody tr:last-child td { border-bottom: none; }
.ci-table tbody tr:hover td { background: var(--color-surface-2); }

.ci-table__year {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-3);
    width: 3rem;
}

.ci-table__bar-col { width: 120px; min-width: 80px; padding-right: var(--space-4); }

/* ── Progress bar inside table ────────────────────────────────────────────── */
.ci-bar {
    height: 6px;
    background: var(--color-surface-3);
    border-radius: 3px;
    overflow: hidden;
    display: flex;
}

.ci-bar__fill {
    height: 100%;
    transition: width 0.4s ease;
}

.ci-bar__fill--contrib  { background: var(--color-text-5); }
.ci-bar__fill--interest { background: var(--color-accent); }

#result {                                                                                                                                                                                                     
          scroll-margin-top: calc(var(--header-height) + var(--space-6));                                                                                                                                              
       }                                                                                                                                                                                                                




@media (max-width: 600px) {
     .ci-table th { padding: var(--space-1) var(--space-1) !important;}
     .btn--primary { width: 100%; }
}