/* =============================================
   EVC HOMEPAGE DESIGN SYSTEM
   ============================================= */

:root {
    --evc-orange: #FF9900;
    --evc-blue-dark: #003366;
    --evc-blue-light: #2071C3;
    --text-light: #e2e8f0; /* slate-200 */
    --text-dark: #1e293b; /* slate-800 */
    --bg-dark-primary: #0a0a0a;
    --bg-dark-secondary: #1e293b;
    --font-sans: 'Montserrat', sans-serif;
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-dark-primary);
    color: var(--text-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: 700; /* bold */
}

/* =============================================
   BUTTON STYLES
   ============================================= */

.btn {
    display: inline-block;
    font-weight: 600; /* semibold */
    text-align: center;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.5rem 1.5rem; /* Equivalent to py-2 px-6 */
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 9999px; /* rounded-full */
    transition: var(--transition-fast);
    text-decoration: none; /* Ensure links styled as buttons don't have underlines */
}

.btn-primary {
    color: white !important;
    background-image: linear-gradient(to right, #FF9900 0%, #F97316 51%, #FF9900 100%) !important;
    background-size: 200% auto !important;
    border: none !important;
    box-shadow: 0 4px 15px 0 rgba(255, 153, 0, 0.3) !important;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2) !important;
    display: inline-block !important;
}

.btn-primary:hover {
    background-position: right center; /* change the direction of the change here */
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(255, 153, 0, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 5px 10px rgba(255, 153, 0, 0.2);
}

.btn-secondary {
    color: var(--text-light);
    background-color: transparent;
    border-color: var(--text-light);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateY(-2px);
}

/* =============================================
   GLOBAL & DIGITAL EFFECTS
   ============================================= */

.section-title {
    font-size: 2.25rem; /* text-4xl */
    font-weight: 900; /* black */
    letter-spacing: -0.025em;
}

.section-subtitle {
    color: var(--evc-orange);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-hover-effect {
    transition: var(--transition-fast);
}

.card-hover-effect:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* CSS for Homepage Sections */

/* Revolutionary Pre-inscription Form */
.form-input {
    display: block;
    width: 100%;
    border-radius: 0.375rem; /* rounded-md */
    border-width: 0;
    background-color: rgba(255, 255, 255, 0.05);
    padding: 0.625rem 1rem; /* py-2.5 px-4 */
    color: white;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    ring: 1px solid rgba(255, 255, 255, 0.1);
}

.form-input:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
    --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color);
    box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow, 0 0 #0000);
    --tw-ring-color: #F97316; /* focus:ring-orange-500 */
}

#form-modal .form-step {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

#form-modal .form-step.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes soft-flash {
    0%, 100% { opacity: 1; filter: brightness(100%); }
    50% { opacity: 0.8; filter: brightness(120%); }
}

/* =============================================
   FOUNDER SECTION ANIMATED BG
   ============================================= */
.founder-section-bg::before, .founder-section-bg::after {
    content: '';
    position: absolute;
    z-index: 0;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(120px);
    will-change: transform;
}

.founder-section-bg::before {
    top: -10%;
    left: -10%;
    background: rgba(0, 51, 102, 0.4); /* EVC Blue */
    animation: move-glow-1 25s infinite alternate ease-in-out;
}

.founder-section-bg::after {
    bottom: -10%;
    right: -10%;
    background: rgba(255, 117, 15, 0.3); /* EVC Orange */
    animation: move-glow-2 25s infinite alternate ease-in-out;
}

@keyframes move-glow-1 {
    from { transform: translate(0, 0) rotate(0deg) scale(1); }
    to { transform: translate(100px, 100px) rotate(360deg) scale(1.5); }
}

@keyframes move-glow-2 {
    from { transform: translate(0, 0) rotate(0deg) scale(1.2); }
    to { transform: translate(-100px, -100px) rotate(-360deg) scale(1); }
}

/* =============================================
   FOUNDER CARD FLIP
   ============================================= */
.founder-card-container {
    perspective: 1500px;
}

.founder-card-inner {
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.68, -0.55, 0.27, 1.55);
}

.founder-card-inner.is-flipped {
    transform: rotateY(180deg);
}

.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden; /* Safari */
}

.card-back {
    transform: rotateY(180deg);
}

/* =============================================
   FOUNDER STICKY SCROLL
   ============================================= */
.founder-step {
    min-height: 60vh; /* Ensure enough scroll space for the effect */
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.partner-logo {
    filter: invert(1) grayscale(100%) brightness(200%);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.partner-logo:hover {
    opacity: 1;
    filter: invert(1) grayscale(0%) brightness(100%);
}

/* =============================================
   PRESENTATION PAGE TABS
   ============================================= */
.tab-button {
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: #9ca3af; /* gray-400 */
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.tab-button:hover {
    color: white;
}

.tab-button.active {
    color: var(--evc-orange);
    border-bottom-color: var(--evc-orange);
}

.tab-panel {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.tab-panel.active {
    display: block;
}

.hero-text-slider .swiper-slide-active h1,
.hero-bg-slider .swiper-slide-active .bg-cover {
    animation: soft-flash 1.5s ease-in-out forwards;
}

/* =============================================
   PARTICLES.JS BACKGROUND
   ============================================= */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1; /* Place it behind all content */
}

/* =============================================
   LAUREATS CAROUSEL STYLES
   ============================================= */

.laureats-carousel .swiper-pagination-bullet {
    background-color: rgba(255, 255, 255, 0.5);
    width: 10px;
    height: 10px;
    transition: var(--transition-fast);
    opacity: 1;
}

.laureats-carousel .swiper-pagination-bullet-active {
    background-color: var(--evc-orange);
    transform: scale(1.3);
}

.laureats-next, .laureats-prev {
    color: var(--evc-orange);
    background-color: rgba(0, 0, 0, 0.3);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    backdrop-filter: blur(5px);
    transition: var(--transition-fast);
}

.laureats-next:hover, .laureats-prev:hover {
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    transform: scale(1.1);
}

.laureats-next::after, .laureats-prev::after {
    font-size: 1.25rem; /* 20px */
    font-weight: 900;
}

/* =============================================
   SCROLL TO TOP BUTTON
   ============================================= */

.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, var(--evc-orange) 0%, #F97316 100%);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 20px rgba(255, 153, 0, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

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

.scroll-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 8px 30px rgba(255, 153, 0, 0.6);
    background: linear-gradient(135deg, #F97316 0%, var(--evc-orange) 100%);
}

.scroll-to-top:active {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 4px 15px rgba(255, 153, 0, 0.5);
}

.scroll-to-top i {
    animation: bounce-arrow 2s infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
        font-size: 1.1rem;
    }
}