/* ===== COMPOSANTS RÉUTILISABLES ===== */

/* === BOUTONS === */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-accent-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    color: white;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-accent-primary);
    border: 2px solid var(--color-accent-primary);
}

.btn-secondary:hover {
    background-color: var(--color-accent-light);
    transform: translateY(-2px);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
}

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

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-sm);
}

.btn-lg {
    padding: 1.125rem 2.25rem;
    font-size: var(--font-size-lg);
}

/* === TAGS/CHIPS === */

.tag {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.875rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    background-color: var(--color-accent-light);
    color: var(--color-accent-primary);
    border-radius: var(--border-radius-full);
    border: 1px solid rgba(0, 180, 216, 0.2);
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.tag:hover {
    background-color: var(--color-accent-primary);
    color: white;
    border-color: var(--color-accent-primary);
}

.tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* Tag filtres (cliquables) */
.tag-filter {
    cursor: pointer;
}

.tag-filter.active {
    background-color: var(--color-accent-primary);
    color: white;
    border-color: var(--color-accent-primary);
}

/* === CARTES === */

.card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--animation-duration-normal) var(--transition-smooth);
    height: 100%;
    display: flex;
    flex-direction: column;
    will-change: transform, box-shadow;
}

.card:hover {
    box-shadow: var(--shadow-elevated);
    transform: translateY(-8px) scale(1.02);
    border-color: var(--color-accent-primary);
}

/* Animation de l'icône de la carte au hover */
.card:hover .card-image i {
    transform: scale(1.15) rotate(5deg);
}

.card-image i {
    transition: transform var(--animation-duration-normal) var(--transition-bounce);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
    background-color: var(--color-bg-tertiary);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.card-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
    line-height: var(--line-height-relaxed);
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
}

/* Carte projet spécifique */
.project-card {
    position: relative;
}

.project-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--color-accent-primary) 0%, var(--color-accent-hover) 100%);
    border-radius: var(--border-radius-lg) 0 0 var(--border-radius-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover::before {
    opacity: 1;
}

/* === NAVIGATION HEADER === */

.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    box-shadow: none;
    transition: all var(--transition-base);
    padding: var(--spacing-md) 0;
}

/* Specific height and background for all pages except index to fit the profile photo */
body:not(.index-page) .nav-header {
    padding: 1.25rem 0;
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

/* In dark mode, ensure the background is solid on all secondary pages too */
[data-theme="dark"] body:not(.index-page) .nav-header {
    background-color: var(--color-bg-primary);
}

/* Default: elements are dark (text-primary) when unscrolled */
.nav-header:not(.scrolled) .nav-logo,
.nav-header:not(.scrolled) .nav-link,
.nav-header:not(.scrolled) .theme-toggle {
    color: var(--color-text-primary);
}

/* On home page, if the theme is dark, use white text on the transparent hero.
   If the theme is light, the default dark text will be used for visibility. */
[data-theme="dark"] .index-page .nav-header:not(.scrolled) .nav-logo,
[data-theme="dark"] .index-page .nav-header:not(.scrolled) .nav-link,
[data-theme="dark"] .index-page .nav-header:not(.scrolled) .theme-toggle {
    color: white !important;
}

.index-page .nav-header:not(.scrolled) {
    background-color: transparent;
    border-bottom: none;
    padding: var(--spacing-md) 0;
}

.nav-header.scrolled {
    background-color: var(--color-bg-secondary);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: 0.5rem 0;
}

/* Ensure text remains visible (dark in light mode, primary in dark mode) when scrolled */
.nav-header.scrolled .nav-logo,
.nav-header.scrolled .nav-link,
.nav-header.scrolled .theme-toggle {
    color: var(--color-text-primary) !important;
}

body:not(.index-page) .nav-header.scrolled {
    padding: 0.75rem 0;
    /* Maintain more room for the photo on secondary pages */
}

/* Auto-hide navbar when scrolling down */
.nav-header.nav-hidden {
    transform: translateY(-100%);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.5rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    z-index: 10;
}

.nav-logo-img {
    width: 65px;
    height: 65px;
    border-radius: var(--border-radius-full);
    object-fit: cover;
    border: 3px solid white;
    box-shadow: 0 4px 15px rgba(0, 180, 216, 0.3);
    transition: all var(--transition-base);
    background: white;
}

.nav-header.scrolled .nav-logo-img {
    width: 45px;
    height: 45px;
    border-width: 2px;
}

.nav-logo {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    text-decoration: none;
    transition: all var(--transition-base);
}

.nav-header.scrolled .nav-logo {
    font-size: var(--font-size-xl);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-link {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    text-decoration: none;
    position: relative;
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent-primary);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* === THEME TOGGLE === */

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--color-text-primary);
    font-size: 1.25rem;
    transition: all var(--transition-fast);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    transform: scale(1.1);
    background-color: var(--color-bg-tertiary);
}

.theme-toggle:active {
    transform: scale(0.95);
}

/* === HERO SECTION === */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at 10% 20%, rgba(0, 181, 216, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(0, 181, 216, 0.08) 0%, transparent 40%),
        var(--color-bg-secondary);
    position: relative;
    overflow: hidden;
    padding-top: calc(var(--header-height) + 40px);
    padding-bottom: 60px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: var(--color-accent-primary);
    filter: blur(150px);
    opacity: 0.1;
    border-radius: 50%;
    z-index: 0;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3xl);
    position: relative;
    z-index: 1;
    text-align: center;
}

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

.hero-cta {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-portrait {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-portrait-frame {
    width: 320px;
    height: 380px;
    background-color: var(--color-accent-light);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-lg);
    animation: morph 8s ease-in-out infinite;
    border: 4px solid white;
    margin: 0 auto;
}

.about-portrait-frame {
    width: 250px;
    height: 300px;
}

[data-theme="dark"] .hero-portrait-frame {
    border-color: var(--color-border);
}

.hero-portrait-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.1);
}

@keyframes morph {
    0% {
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    }

    50% {
        border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%;
    }

    100% {
        border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    }
}

.hero-title {
    font-size: 3.8rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
    font-weight: 800;
    color: var(--color-text-primary);
}

.index-page .hero-title {
    color: black;
}

[data-theme="dark"] .index-page .hero-title {
    color: white;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

/* === SECTION HEADER === */

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* === BADGE === */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-full);
    color: var(--color-text-secondary);
}

.badge-primary {
    background-color: var(--color-accent-light);
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.badge-projet-integrateur {
    background-color: var(--color-projet-integrateur);
    color: white;
}

/* === TIMELINE === */

.timeline {
    position: relative;
    padding: var(--spacing-lg) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-border);
    transform: translateX(-50%);
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr 40px 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.timeline-marker {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline-dot {
    width: 16px;
    height: 16px;
    background-color: var(--color-accent-primary);
    border: 4px solid var(--color-bg-secondary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--color-accent-light);
}

/* === CALLOUT === */

.callout {
    padding: var(--spacing-lg);
    border-left: 4px solid var(--color-accent-primary);
    background-color: var(--color-accent-light);
    border-radius: var(--border-radius-md);
    margin: var(--spacing-xl) 0;
}

.callout-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-sm);
}

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

/* === FOOTER === */

.footer {
    background-color: var(--color-text-primary);
    color: var(--color-bg-primary);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    color: var(--color-bg-primary);
    margin-bottom: var(--spacing-md);
}

.footer-links {
    list-style: none;
}

.footer-links a {
    color: var(--color-bg-primary);
    opacity: 0.8;
    text-decoration: none;
    display: block;
    padding: var(--spacing-xs) 0;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent-primary);
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    color: var(--color-bg-primary);
    opacity: 0.6;
    font-size: var(--font-size-sm);
}

/* === FORMULAIRE === */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.form-control {
    width: 100%;
    padding: 0.875rem;
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 4px var(--color-accent-light);
}

.form-control::placeholder {
    color: var(--color-text-muted);
    opacity: 0.7;
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* === LOADING SPINNER === */

.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* === BACK TO TOP BUTTON === */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--color-accent-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-elevated);
}

.back-to-top:active {
    transform: translateY(-2px);
}

/* === MOBILE MENU TOGGLE === */

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 24px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    transition: all var(--transition-base);
}

.hamburger-line {
    width: 100%;
    height: 3px;
    background-color: var(--color-text-primary);
    border-radius: 3px;
    transition: all var(--transition-base);
}

/* Hamburger animation when open */
.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* === RESPONSIVE === */

@media (max-width: 768px) {
    .nav-header {
        background-color: var(--color-bg-secondary);
        backdrop-filter: blur(10px);
        box-shadow: var(--shadow-sm);
        height: var(--header-height-mobile);
    }

    .nav-container {
        height: var(--header-height-mobile);
    }

    .nav-menu {
        gap: var(--spacing-lg);
    }

    .hero {
        min-height: auto;
        padding: calc(var(--header-height-mobile) + 40px) 0 60px;
    }

    .hero-container {
        text-align: center;
        gap: var(--spacing-2xl);
    }

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

    .hero-portrait {
        order: 1;
    }

    .hero-portrait-frame {
        width: 250px;
        height: 280px;
        margin: 0 auto;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
        margin: 0 auto var(--spacing-xl);
    }

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

    .hero-content .mt-xl {
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        grid-template-columns: 40px 1fr;
    }

    .timeline-item> :first-child {
        display: none;
    }

    :root {
        --font-size-4xl: 2rem;
        /* 32px */
        --font-size-3xl: 1.5rem;
        /* 24px */
        --font-size-2xl: 1.25rem;
        /* 20px */
    }

    .container {
        padding: 0 var(--container-padding-mobile);
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

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

    /* === MOBILE MENU === */

    .mobile-menu-toggle {
        display: flex;
        min-width: 44px;
        min-height: 44px;
        align-items: center;
        justify-content: center;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--color-bg-secondary);
        flex-direction: column;
        align-items: flex-start;
        padding: calc(var(--header-height) + 2rem) 2rem 2rem;
        gap: 0;
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        z-index: 1000;
        overflow-y: auto;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--color-border-light);
    }

    .nav-menu li:last-child {
        border-bottom: none;
        margin-top: var(--spacing-md);
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: 16px 0;
        min-height: 44px;
        font-size: var(--font-size-lg);
    }

    .nav-menu .btn {
        width: 100%;
        text-align: center;
        justify-content: center;
        min-height: 48px;
    }

    /* Close icon color in dark mode */
    [data-theme="dark"] .mobile-menu-toggle .hamburger-line {
        background-color: var(--color-text-primary);
    }

    /* === TOUCH-FRIENDLY TARGETS === */

    .btn {
        min-height: 44px;
        min-width: 44px;
        padding: 12px 20px;
    }

    .btn-sm {
        min-height: 44px;
        padding: 10px 18px;
    }

    .tag {
        min-height: 40px;
        padding: 8px 16px;
        display: inline-flex;
        align-items: center;
    }

    .back-to-top {
        width: 56px;
        height: 56px;
        font-size: 1.75rem;
        bottom: 20px;
        right: 20px;
    }

    .theme-toggle {
        min-width: 44px;
        min-height: 44px;
        font-size: 1.5rem;
    }
}