/* ==========================================================================
   EPC Brand Guide → Components
   Header, Footer, Nav, Cards, Tables, Buttons, Callouts, Swatches, Badges
   ========================================================================== */

/* ========================================================================
   HEADER
   ======================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: var(--blanc);
    display: flex;
    align-items: center;
    transition: box-shadow var(--transition-normal);
}

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

.header-inner {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--margin-mobile);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* -- Logo --------------------------------------------------------------- */
.logo {
    font-family: var(--font-primary);
    font-weight: var(--fw-black);
    font-style: italic;
    font-size: 1.75rem;
    color: var(--bleu-marine);
    letter-spacing: 0.04em;
    text-decoration: none;
    flex-shrink: 0;
}

.logo:hover,
.logo:focus {
    color: var(--bleu-marine);
}

.logo-img {
    height: 48px;
    width: auto;
    display: block;
}

/* -- Desktop Navigation -------------------------------------------------- */
.main-nav {
    display: none;
}

.main-nav ul {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.main-nav a {
    font-family: var(--font-primary);
    font-weight: var(--fw-semibold);
    font-size: 0.9375rem;
    color: var(--bleu-marine);
    text-decoration: none;
    padding: var(--space-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--or-profond);
    transition: width var(--transition-normal);
}

.main-nav a:hover::after,
.main-nav a:focus::after,
.main-nav a.active::after {
    width: 100%;
}

.main-nav a[aria-current="page"]::after {
    width: 100%;
}

.main-nav a[aria-current="page"] {
    color: var(--or-profond);
}

/* -- Hamburger Button ---------------------------------------------------- */
.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1100;
    position: relative;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--bleu-marine);
    transition: all var(--transition-normal);
    position: absolute;
}

.hamburger span:nth-child(1) {
    transform: translateY(-7px);
}

.hamburger span:nth-child(2) {
    transform: translateY(0);
}

.hamburger span:nth-child(3) {
    transform: translateY(7px);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg);
    background: var(--blanc);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg);
    background: var(--blanc);
}

/* -- Mobile Navigation --------------------------------------------------- */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background: var(--bleu-marine);
    z-index: 1050;
    padding: calc(var(--header-height) + var(--space-lg)) var(--space-lg) var(--space-lg);
    transition: right var(--transition-normal);
    overflow-y: auto;
}

.mobile-nav.open {
    right: 0;
}

.mobile-nav ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.mobile-nav a {
    display: block;
    font-family: var(--font-primary);
    font-weight: var(--fw-semibold);
    font-size: 1.125rem;
    color: var(--blanc);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.mobile-nav a:hover,
.mobile-nav a:focus {
    color: var(--or-clair);
}

.mobile-nav a[aria-current="page"] {
    color: var(--or-clair);
}

/* -- Mobile Overlay ------------------------------------------------------ */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(23, 38, 78, 0.5);
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.nav-overlay.visible {
    opacity: 1;
    visibility: visible;
}

/* ========================================================================
   FOOTER
   ======================================================================== */
.site-footer {
    background: var(--bleu-marine);
    color: var(--blanc);
    padding: var(--space-xl) 0 var(--space-lg);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--margin-mobile);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-brand .footer-logo {
    font-family: var(--font-primary);
    font-weight: var(--fw-black);
    font-style: italic;
    font-size: 1.75rem;
    color: var(--blanc);
    margin-bottom: var(--space-xs);
}

.footer-logo-img {
    height: 56px;
    width: auto;
    display: block;
    margin-bottom: var(--space-xs);
}

.footer-brand .footer-tagline {
    color: var(--or-clair);
    font-weight: var(--fw-bold);
    font-style: italic;
    font-size: 1rem;
    margin-bottom: var(--space-sm);
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--small-size);
    margin-bottom: 0.3em;
}

.footer-nav h4 {
    color: var(--or-clair);
    font-size: 1rem;
    font-weight: var(--fw-semibold);
    margin-bottom: var(--space-sm);
}

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.footer-nav a {
    color: rgba(255, 255, 255, 0.75);
    font-size: var(--small-size);
    transition: color var(--transition-fast);
}

.footer-nav a:hover,
.footer-nav a:focus {
    color: var(--or-clair);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    text-align: center;
}

.footer-slogan {
    color: var(--or-clair);
    font-weight: var(--fw-bold);
    font-style: italic;
    font-size: 1.125rem;
}

.footer-copyright {
    color: var(--gris-moyen);
    font-size: var(--small-size);
}

.footer-top-link {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--small-size);
    transition: color var(--transition-fast);
}

.footer-top-link:hover {
    color: var(--or-clair);
}

/* ========================================================================
   TABLES
   ======================================================================== */
.table-wrapper {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: var(--space-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    position: relative;
}

/* Scroll indicator for mobile */
.table-wrapper::after {
    content: '→';
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gris-moyen);
    font-size: 1.25rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

@media (max-width: 767px) {
    .table-wrapper::after {
        opacity: 0.5;
    }
}

.table-wrapper table {
    width: 100%;
    min-width: 500px;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table-wrapper thead th {
    background: var(--bleu-marine);
    color: var(--blanc);
    font-weight: var(--fw-semibold);
    font-size: var(--small-size);
    padding: 14px 16px;
    text-align: left;
    white-space: nowrap;
}

.table-wrapper tbody td {
    padding: 12px 16px;
    font-size: var(--small-size);
    border-bottom: 1px solid rgba(23, 38, 78, 0.1);
    vertical-align: top;
}

.table-wrapper tbody tr:nth-child(even) {
    background: var(--gris-clair);
}

.table-wrapper tbody tr:nth-child(odd) {
    background: var(--blanc);
}

.table-wrapper tbody tr:hover {
    background: rgba(244, 215, 127, 0.1);
}

/* ========================================================================
   CALLOUTS / NOTES (📌)
   ======================================================================== */
.callout {
    background: rgba(244, 215, 127, 0.12);
    border-left: 4px solid var(--or-profond);
    padding: 20px 24px;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    margin-bottom: var(--space-md);
}

.callout p:last-child {
    margin-bottom: 0;
}

.callout-title {
    font-weight: var(--fw-bold);
    color: var(--bleu-marine);
    margin-bottom: var(--space-xs);
}

/* ========================================================================
   BLOCKQUOTES / CITATIONS
   ======================================================================== */
blockquote,
.citation {
    background: var(--gris-clair);
    padding: 32px 40px;
    border-left: 4px solid var(--or-profond);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-md);
    position: relative;
    font-weight: var(--fw-bold);
    font-style: italic;
    color: var(--bleu-marine);
    font-size: clamp(1.125rem, 1.5vw, 1.375rem);
    line-height: 1.5;
}

blockquote::before {
    content: '«';
    position: absolute;
    top: 12px;
    left: 12px;
    font-size: 4rem;
    color: var(--or-clair);
    opacity: 0.25;
    line-height: 1;
    font-family: var(--font-primary);
    font-weight: var(--fw-black);
}

blockquote::after {
    content: '»';
    position: absolute;
    bottom: 4px;
    right: 16px;
    font-size: 4rem;
    color: var(--or-clair);
    opacity: 0.25;
    line-height: 1;
    font-family: var(--font-primary);
    font-weight: var(--fw-black);
}

blockquote p {
    position: relative;
    z-index: 1;
}

/* ========================================================================
   DO / DON'T BLOCKS
   ======================================================================== */
.do-block {
    border-left: 4px solid var(--vert-do);
    background: rgba(45, 125, 70, 0.05);
    padding: 16px 20px;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    margin-bottom: var(--space-sm);
}

.do-block .block-label {
    font-weight: var(--fw-bold);
    color: var(--vert-do);
    margin-bottom: var(--space-xs);
}

.dont-block {
    border-left: 4px solid var(--rouge-dont);
    background: rgba(192, 57, 43, 0.05);
    padding: 16px 20px;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    margin-bottom: var(--space-sm);
}

.dont-block .block-label {
    font-weight: var(--fw-bold);
    color: var(--rouge-dont);
    margin-bottom: var(--space-xs);
}

/* ========================================================================
   BUTTONS / CTA
   ======================================================================== */
.btn {
    display: inline-block;
    background: var(--or-profond);
    color: var(--blanc);
    font-family: var(--font-primary);
    font-weight: var(--fw-bold);
    font-size: 1rem;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background var(--transition-normal),
        transform var(--transition-normal),
        box-shadow var(--transition-normal);
}

.btn:hover,
.btn:focus {
    background: var(--ambre-dore);
    color: var(--blanc);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--or-profond);
    border: 2px solid var(--or-profond);
}

.btn-outline:hover,
.btn-outline:focus {
    background: var(--or-profond);
    color: var(--blanc);
}

/* ========================================================================
   CARDS (Table of Contents)
   ======================================================================== */
.card {
    background: var(--blanc);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    padding: var(--space-md);
    transition: box-shadow var(--transition-normal),
        transform var(--transition-normal),
        border-color var(--transition-normal);
    border-top: 3px solid transparent;
    text-decoration: none;
    display: block;
    color: inherit;
}

.card:hover,
.card:focus {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-top-color: var(--or-profond);
}

.card-number {
    font-size: 2rem;
    font-weight: var(--fw-black);
    font-style: italic;
    color: var(--or-profond);
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.card-title {
    font-size: 1.125rem;
    font-weight: var(--fw-semibold);
    color: var(--bleu-marine);
    margin-bottom: var(--space-xs);
}

.card-desc {
    font-size: var(--small-size);
    color: var(--gris-fonce);
    line-height: 1.5;
}

/* ========================================================================
   COLOR SWATCHES
   ======================================================================== */
.swatch {
    border-radius: 12px;
    min-height: 120px;
    min-width: 120px;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    transition: transform var(--transition-normal),
        box-shadow var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.swatch:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.swatch-name {
    font-weight: var(--fw-bold);
    font-size: 1rem;
    margin-bottom: 4px;
}

.swatch-hex {
    font-family: var(--font-mono);
    font-size: var(--small-size);
    margin-bottom: 2px;
}

.swatch-details {
    font-size: 0.75rem;
    opacity: 0.85;
    line-height: 1.4;
}

/* Light text for dark swatches */
.swatch-dark {
    color: var(--blanc);
}

/* Dark text for light swatches */
.swatch-light {
    color: var(--bleu-marine);
}

/* ========================================================================
   TYPOGRAPHY SPECIMEN
   ======================================================================== */
.specimen {
    padding: var(--space-md);
    margin-bottom: var(--space-sm);
    border-radius: var(--border-radius);
}

.specimen:nth-child(even) {
    background: var(--gris-clair);
}

.specimen-label {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--gris-moyen);
    margin-bottom: var(--space-xs);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.specimen-text {
    margin-bottom: var(--space-xs);
}

/* ========================================================================
   LOGO SIMULATION
   ======================================================================== */
.logo-demo {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    border-radius: var(--border-radius);
    min-height: 160px;
}

.logo-demo-text {
    font-family: var(--font-primary);
    font-weight: var(--fw-black);
    font-style: italic;
    font-size: 3rem;
    letter-spacing: 0.08em;
}

.logo-demo-descriptor {
    font-family: var(--font-primary);
    font-weight: var(--fw-semibold);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-top: var(--space-xs);
    text-align: center;
}

.logo-clearspace {
    border: 2px dashed var(--or-clair);
    padding: var(--space-lg);
    display: inline-flex;
    flex-direction: column;
    align-items: center;
}

/* Forbidden logo treatments */
.logo-forbidden {
    position: relative;
    overflow: hidden;
}

.logo-forbidden::after {
    content: '✕';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    color: var(--rouge-dont);
    font-weight: var(--fw-black);
    z-index: 2;
}

.logo-forbidden::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(192, 57, 43, 0.15);
    z-index: 1;
}

.logo-skew {
    transform: skewX(-15deg);
}

.logo-rotate {
    transform: rotate(25deg);
}

.logo-stretch {
    transform: scaleX(1.5);
}

.logo-compress {
    transform: scaleY(0.6);
}

.logo-shadow-effect {
    text-shadow: 4px 4px 8px rgba(0, 0, 0, 0.5);
}

.logo-gradient-bg {
    background: repeating-conic-gradient(#ccc 0% 25%, #eee 25% 50%) 0 0 / 20px 20px;
}

/* ========================================================================
   BADGES
   ======================================================================== */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: var(--bleu-marine);
    color: var(--blanc);
}

.badge-gold {
    background: var(--or-profond);
    color: var(--blanc);
}

.badge-do {
    background: rgba(45, 125, 70, 0.1);
    color: var(--vert-do);
}

.badge-dont {
    background: rgba(192, 57, 43, 0.1);
    color: var(--rouge-dont);
}

/* ========================================================================
   TONE SPECTRUM BAR
   ======================================================================== */
.tone-bar {
    display: flex;
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
    margin: var(--space-xs) 0;
    background: var(--gris-clair);
}

.tone-bar-fill {
    background: linear-gradient(90deg, var(--bleu-marine), var(--or-profond));
    border-radius: 4px;
    transition: width var(--transition-slow);
}

/* ========================================================================
   SUBSECTION DIVIDER
   ======================================================================== */
.subsection-divider {
    width: 60px;
    height: 3px;
    background: var(--or-profond);
    border-radius: 2px;
    margin: var(--space-lg) 0;
}

/* ========================================================================
   ARCHITECTURE TREE
   ======================================================================== */
.arch-tree {
    font-family: var(--font-mono);
    font-size: var(--small-size);
    background: var(--gris-clair);
    padding: var(--space-md);
    border-radius: var(--border-radius);
    line-height: 1.8;
    overflow-x: auto;
    color: var(--bleu-marine);
    white-space: pre;
}

/* ========================================================================
   RESPONSIVE ADJUSTMENTS
   ======================================================================== */
@media (min-width: 768px) {
    .header-inner {
        padding: 0 var(--space-lg);
    }

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }

    .footer-inner {
        padding: 0 var(--space-lg);
    }
}

@media (min-width: 1024px) {
    .main-nav {
        display: block;
    }

    .hamburger {
        display: none;
    }

    .header-inner {
        padding: 0 var(--margin-desktop);
    }

    .footer-inner {
        padding: 0 var(--margin-desktop);
    }
}