/* ========================================
   SITEF Ingénierie - Custom Styles
   ======================================== */

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection color */
::selection {
    background-color: #102a43;
    color: white;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* ========================================
   Header Styles
   ======================================== */

#header {
    transition: all 0.3s ease;
}

#header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #102a43, #334e68);
    transition: width 0.3s ease;
}

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

/* ========================================
   Hero Section
   ======================================== */

#accueil {
    background-attachment: fixed;
}

@media (max-width: 768px) {
    #accueil {
        background-attachment: scroll;
    }
}

/* Animated gradient text */
.gradient-text {
    background: linear-gradient(135deg, #60a5fa, #22d3d1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Pulse animation for status dot */
@keyframes pulse-ring {
    0% {
        transform: scale(0.8);
        opacity: 1;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

/* ========================================
   Service Cards
   ======================================== */

.service-card {
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #102a43, #334e68);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

/* Icon animation on hover */
.service-card:hover .icon-container {
    animation: bounce 0.5s ease;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

/* ========================================
   About Section
   ======================================== */

.floating-card {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* ========================================
   Zone Section - Map
   ======================================== */

.city-marker {
    transition: all 0.3s ease;
    cursor: pointer;
}

.city-marker:hover circle:first-child {
    r: 12;
}

.city-marker text {
    transition: all 0.3s ease;
}

.city-marker:hover text {
    font-size: 16px;
    fill: #fbbf24;
}

/* ========================================
   Contact Form
   ======================================== */

#contact-form input:focus,
#contact-form select:focus,
#contact-form textarea:focus {
    box-shadow: 0 0 0 3px rgba(16, 42, 67, 0.1);
}

#contact-form input::placeholder,
#contact-form textarea::placeholder {
    color: #94a3b8;
}

/* Form validation styles */
#contact-form input:invalid:not(:placeholder-shown),
#contact-form textarea:invalid:not(:placeholder-shown) {
    border-color: #ef4444;
}

#contact-form input:valid:not(:placeholder-shown),
#contact-form textarea:valid:not(:placeholder-shown) {
    border-color: #22c55e;
}

/* ========================================
   Back to Top Button
   ======================================== */

#back-to-top {
    transform: translateY(20px);
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ========================================
   Animations
   ======================================== */

/* Fade in up animation */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation delays */
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }

/* Scale animation */
.scale-on-hover {
    transition: transform 0.3s ease;
}

.scale-on-hover:hover {
    transform: scale(1.05);
}

/* ========================================
   Responsive Adjustments
   ======================================== */

@media (max-width: 640px) {
    /* Reduce padding on mobile */
    section {
        padding-top: 4rem;
        padding-bottom: 4rem;
    }

    /* Stack stats vertically on very small screens */
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 1024px) {
    /* Adjust hero text size */
    #accueil h1 {
        font-size: 2.5rem;
    }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    #header,
    #back-to-top,
    .no-print {
        display: none !important;
    }

    body {
        font-size: 12pt;
        color: black;
        background: white;
    }

    section {
        page-break-inside: avoid;
    }
}

/* ========================================
   Loading States
   ======================================== */

.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e2e8f0;
    border-top-color: #102a43;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ========================================
   Toast Notifications
   ======================================== */

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    color: white;
    font-weight: 500;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.toast.success {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.toast.error {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

/* ========================================
   Accessibility
   ======================================== */

/* Focus visible styles */
:focus-visible {
    outline: 2px solid #102a43;
    outline-offset: 2px;
}

/* Skip link for screen readers */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: #102a43;
    color: white;
    padding: 1rem 2rem;
    z-index: 1000;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 10px;
}

/* ========================================
   Carousels / Sliders
   ======================================== */

/* Gallery carousel animation */
.animate-scroll {
    display: flex;
    width: max-content;
    animation: scroll 45s linear infinite;
    -webkit-animation: scroll 45s linear infinite;
}

.animate-scroll:hover {
    animation-play-state: paused;
    -webkit-animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

@-webkit-keyframes scroll {
    0% {
        -webkit-transform: translateX(0);
        transform: translateX(0);
    }
    100% {
        -webkit-transform: translateX(-50%);
        transform: translateX(-50%);
    }
}

/* Clients logos carousel - slower */
.animate-scroll-slow {
    display: flex;
    width: max-content;
    animation: scroll-slow 30s linear infinite;
    -webkit-animation: scroll-slow 30s linear infinite;
}

.animate-scroll-slow:hover {
    animation-play-state: paused;
    -webkit-animation-play-state: paused;
}

@keyframes scroll-slow {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

@-webkit-keyframes scroll-slow {
    0% {
        -webkit-transform: translateX(0);
        transform: translateX(0);
    }
    100% {
        -webkit-transform: translateX(-50%);
        transform: translateX(-50%);
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }

    .animate-scroll,
    .animate-scroll-slow {
        animation: none;
    }
}