/* ==========================================================
   PRO Projektipankki
   Shared Design System
   File: /Content/site.css
========================================================== */

/* ----------------------------------------------------------
   1. ROOT VARIABLES
---------------------------------------------------------- */

:root {
    --color-primary: #0b63ce;
    --color-primary-hover: #084fa6;
    --color-primary-soft: #eaf3ff;

    --color-navy: #0f172a;
    --color-navy-soft: #1e293b;

    --color-success: #16a34a;
    --color-warning: #f59e0b;
    --color-danger: #dc2626;
    --color-info: #0284c7;

    --color-background: #f8fafc;
    --color-surface: #ffffff;
    --color-surface-soft: #f1f5f9;

    --color-text: #0f172a;
    --color-text-muted: #64748b;
    --color-text-light: #94a3b8;

    --color-border: #e2e8f0;
    --color-border-strong: #cbd5e1;

    --font-family-base: Inter, Arial, Helvetica, sans-serif;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;

    --line-height-tight: 1.15;
    --line-height-base: 1.6;

    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-pill: 999px;

    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.14);

    --container-width: 1280px;

    --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;

    --transition-fast: 160ms ease;
    --transition-base: 220ms ease;
}


/* ----------------------------------------------------------
   2. RESET AND BASE
---------------------------------------------------------- */

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--color-text);
    background: var(--color-background);
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

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

button,
input,
select,
textarea {
    font: inherit;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    cursor: pointer;
}

table {
    width: 100%;
    border-collapse: collapse;
}

ul,
ol {
    margin-top: 0;
}

h1,
h2,
h3,
h4,
h5,
h6,
p {
    margin-top: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--color-text);
    line-height: var(--line-height-tight);
    letter-spacing: -0.03em;
}


/* ----------------------------------------------------------
   3. TYPOGRAPHY
---------------------------------------------------------- */

.title-xl {
    font-size: clamp(2.75rem, 6vw, var(--font-size-6xl));
    font-weight: 800;
}

.title-lg {
    font-size: clamp(2.25rem, 4vw, var(--font-size-5xl));
    font-weight: 800;
}

.title-md {
    font-size: clamp(1.75rem, 3vw, var(--font-size-4xl));
    font-weight: 750;
}

.title-sm {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
}

.lead {
    max-width: 48rem;
    font-size: clamp(1.0625rem, 2vw, var(--font-size-xl));
    color: var(--color-text-muted);
}

.eyebrow {
    display: inline-block;
    margin-bottom: var(--space-4);
    color: var(--color-primary);
    font-size: var(--font-size-xs);
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.text-small {
    font-size: var(--font-size-sm);
}

.text-muted {
    color: var(--color-text-muted);
}

.text-light {
    color: var(--color-text-light);
}

.text-primary {
    color: var(--color-primary);
}

.text-success {
    color: var(--color-success);
}

.text-danger {
    color: var(--color-danger);
}

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

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}


/* ----------------------------------------------------------
   4. LAYOUT
---------------------------------------------------------- */

.container {
    width: min(calc(100% - 2.5rem), var(--container-width));
    margin-inline: auto;
}

.container-sm {
    width: min(calc(100% - 2.5rem), 860px);
    margin-inline: auto;
}

.section {
    padding-block: var(--space-20);
}

.section-sm {
    padding-block: var(--space-12);
}

.section-lg {
    padding-block: var(--space-24);
}

.section-white {
    background: var(--color-surface);
}

.section-soft {
    background: var(--color-surface-soft);
}

.section-dark {
    color: #ffffff;
    background: var(--color-navy);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4,
.section-dark p {
    color: inherit;
}

.section-heading {
    max-width: 760px;
    margin: 0 auto var(--space-12);
    text-align: center;
}

.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.flex {
    display: flex;
}

.flex-wrap {
    flex-wrap: wrap;
}

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

.gap-2 {
    gap: var(--space-2);
}

.gap-4 {
    gap: var(--space-4);
}

.gap-6 {
    gap: var(--space-6);
}

.gap-8 {
    gap: var(--space-8);
}


/* ----------------------------------------------------------
   5. HEADER AND NAVIGATION
---------------------------------------------------------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.94);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(16px);
}

.site-header__inner {
    min-height: 76px;
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text);
    font-weight: 800;
}

.site-logo__mark {
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    letter-spacing: -0.08em;
}

.site-logo__name {
    font-size: var(--font-size-base);
}

.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    margin-left: auto;
}

.site-nav a {
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: 650;
    transition: color var(--transition-fast);
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
    color: var(--color-primary);
}

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

.mobile-menu-button {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    background: var(--color-surface);
}


/* ----------------------------------------------------------
   6. BUTTONS
---------------------------------------------------------- */

.btn {
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0 var(--space-6);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 750;
    line-height: 1;
    transition:
        transform var(--transition-fast),
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:focus-visible {
    outline: 3px solid rgba(11, 99, 206, 0.24);
    outline-offset: 2px;
}

.btn-primary {
    color: #ffffff;
    background: var(--color-primary);
    box-shadow: 0 10px 24px rgba(11, 99, 206, 0.22);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
}

.btn-secondary {
    color: var(--color-primary);
    background: var(--color-surface);
    border-color: var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary-soft);
}

.btn-outline {
    color: var(--color-text);
    background: transparent;
    border-color: var(--color-border-strong);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-danger {
    color: #ffffff;
    background: var(--color-danger);
}

.btn-sm {
    min-height: 40px;
    padding-inline: var(--space-4);
}

.btn-lg {
    min-height: 56px;
    padding-inline: var(--space-8);
    font-size: var(--font-size-base);
}

.btn-block {
    width: 100%;
}


/* ----------------------------------------------------------
   7. CARDS
---------------------------------------------------------- */

.card {
    overflow: hidden;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.card-hover {
    transition:
        transform var(--transition-base),
        box-shadow var(--transition-base),
        border-color var(--transition-base);
}

.card-hover:hover {
    transform: translateY(-4px);
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.card-body {
    padding: var(--space-6);
}

.card-footer {
    padding: var(--space-5) var(--space-6);
    background: var(--color-surface-soft);
    border-top: 1px solid var(--color-border);
}

.card-title {
    margin-bottom: var(--space-3);
    font-size: var(--font-size-xl);
    font-weight: 750;
}

.card-text {
    margin-bottom: 0;
    color: var(--color-text-muted);
}


/* ----------------------------------------------------------
   8. FEATURE COMPONENTS
---------------------------------------------------------- */

.feature-card {
    height: 100%;
    padding: var(--space-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.feature-icon {
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    margin-bottom: var(--space-6);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    background: var(--color-primary-soft);
    font-size: var(--font-size-xl);
    font-weight: 800;
}

.feature-card h3 {
    margin-bottom: var(--space-3);
    font-size: var(--font-size-xl);
}

.feature-card p {
    margin-bottom: var(--space-5);
    color: var(--color-text-muted);
}

.feature-link {
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: 750;
}

.feature-link:hover {
    color: var(--color-primary-hover);
}


/* ----------------------------------------------------------
   9. BADGES AND STATUS
---------------------------------------------------------- */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 0.35rem 0.7rem;
    border-radius: var(--radius-pill);
    font-size: var(--font-size-xs);
    font-weight: 750;
}

.badge-primary {
    color: var(--color-primary);
    background: var(--color-primary-soft);
}

.badge-success {
    color: #14763c;
    background: #dcfce7;
}

.badge-warning {
    color: #92400e;
    background: #fef3c7;
}

.badge-danger {
    color: #991b1b;
    background: #fee2e2;
}

.badge-neutral {
    color: #475569;
    background: #e2e8f0;
}


/* ----------------------------------------------------------
   10. FORMS
---------------------------------------------------------- */

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: 700;
}

.form-control {
    width: 100%;
    min-height: 48px;
    padding: 0 var(--space-4);
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    outline: none;
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

textarea.form-control {
    min-height: 140px;
    padding-block: var(--space-3);
    resize: vertical;
}

.form-control::placeholder {
    color: var(--color-text-light);
}

.form-control:hover {
    border-color: #94a3b8;
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(11, 99, 206, 0.12);
}

.form-help {
    display: block;
    margin-top: var(--space-2);
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.form-error {
    display: block;
    margin-top: var(--space-2);
    color: var(--color-danger);
    font-size: var(--font-size-xs);
    font-weight: 700;
}

.validation-summary-errors {
    margin-bottom: var(--space-6);
    padding: var(--space-4);
    color: #991b1b;
    background: #fee2e2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-md);
}


/* ----------------------------------------------------------
   11. TABLES
---------------------------------------------------------- */

.table-wrapper {
    overflow-x: auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.data-table th,
.data-table td {
    padding: var(--space-4) var(--space-5);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.data-table th {
    color: var(--color-text-muted);
    background: var(--color-surface-soft);
    font-size: var(--font-size-xs);
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.data-table td {
    color: var(--color-text);
    font-size: var(--font-size-sm);
}

.data-table tbody tr:hover {
    background: #f8fbff;
}

.data-table tbody tr:last-child td {
    border-bottom: 0;
}


/* ----------------------------------------------------------
   12. ALERTS
---------------------------------------------------------- */

.alert {
    padding: var(--space-4) var(--space-5);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.alert-info {
    color: #075985;
    background: #e0f2fe;
    border-color: #bae6fd;
}

.alert-success {
    color: #166534;
    background: #dcfce7;
    border-color: #bbf7d0;
}

.alert-warning {
    color: #92400e;
    background: #fef3c7;
    border-color: #fde68a;
}

.alert-danger {
    color: #991b1b;
    background: #fee2e2;
    border-color: #fecaca;
}


/* ----------------------------------------------------------
   13. FOOTER
---------------------------------------------------------- */

.site-footer {
    padding: var(--space-16) 0 var(--space-6);
    color: #ffffff;
    background: #081a35;
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, minmax(0, 1fr));
    gap: var(--space-10);
}

.site-footer h3,
.site-footer strong {
    color: #ffffff;
}

.site-footer p,
.site-footer a {
    color: #aebbd0;
}

.site-footer a {
    display: inline-block;
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
}

.site-footer a:hover {
    color: #ffffff;
}

.site-footer__bottom {
    display: flex;
    justify-content: space-between;
    gap: var(--space-4);
    margin-top: var(--space-12);
    padding-top: var(--space-6);
    color: #8292aa;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: var(--font-size-xs);
}


/* ----------------------------------------------------------
   14. ACCESSIBILITY
---------------------------------------------------------- */

.skip-link {
    position: fixed;
    top: -80px;
    left: var(--space-4);
    z-index: 2000;
    padding: var(--space-3) var(--space-4);
    color: #ffffff;
    background: var(--color-navy);
    border-radius: var(--radius-sm);
}

.skip-link:focus {
    top: var(--space-4);
}

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

:focus-visible {
    outline: 3px solid rgba(11, 99, 206, 0.28);
    outline-offset: 2px;
}


/* ----------------------------------------------------------
   15. UTILITIES
---------------------------------------------------------- */

.hidden {
    display: none !important;
}

.block {
    display: block;
}

.w-full {
    width: 100%;
}

.max-w-none {
    max-width: none;
}

.mx-auto {
    margin-inline: auto;
}

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.p-0 { padding: 0; }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.rounded {
    border-radius: var(--radius-md);
}

.rounded-lg {
    border-radius: var(--radius-lg);
}

.shadow-sm {
    box-shadow: var(--shadow-sm);
}

.shadow-md {
    box-shadow: var(--shadow-md);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.border {
    border: 1px solid var(--color-border);
}

.bg-white {
    background: var(--color-surface);
}

.bg-soft {
    background: var(--color-surface-soft);
}


/* ----------------------------------------------------------
   16. RESPONSIVE
---------------------------------------------------------- */

@media (max-width: 1024px) {
    .site-nav {
        display: none;
    }

    .mobile-menu-button {
        display: inline-grid;
        place-items: center;
        margin-left: auto;
    }

    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .site-footer__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}


@media (max-width: 1024px) {
    .site-nav.is-open {
        display: flex;
        position: absolute;
        top: 76px;
        left: 1.25rem;
        right: 1.25rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding: 1.25rem;
        background: var(--color-surface);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
    }
}



@media (max-width: 720px) {
    .container,
    .container-sm {
        width: min(calc(100% - 2rem), var(--container-width));
    }

    .section {
        padding-block: var(--space-16);
    }

    .section-lg {
        padding-block: var(--space-20);
    }

    .site-header__inner {
        min-height: 68px;
    }

    .site-header__actions .btn {
        display: none;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .site-footer__grid {
        grid-template-columns: 1fr;
    }

    .site-footer__bottom {
        flex-direction: column;
    }

    .btn-mobile-block {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}