/* --- CSS VARIABLES & THEME --- */
:root {
    --bg-primary: #020617;
    --bg-secondary: #0f172a;
    --bg-tertiary: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    
    --accent-teal: #14b8a6;
    --accent-teal-glow: rgba(20, 184, 166, 0.5);
    --accent-orange: #f59e0b;
    --accent-orange-glow: rgba(245, 158, 11, 0.5);
    
    --header-bg: rgba(2, 6, 23, 0.95);
    --shadow-color: rgba(0, 0, 0, 0.5);
}

html.light-mode {
    --bg-primary: #f0f4f8;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --border-color: #cbd5e1;
    
    --header-bg: rgba(255, 255, 255, 0.98);
    --shadow-color: rgba(148, 163, 184, 0.2);
}

/* --- GLOBAL SETTINGS --- */
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    background-image: radial-gradient(circle at 50% 0%, rgba(20, 184, 166, 0.08), transparent 70%);
    background-attachment: fixed;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Utility classes */
.border-theme { border-color: var(--border-color) !important; }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-tertiary { background-color: var(--bg-tertiary); }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }

/* Team Cards - Artistic Backgrounds */
.team-card {
    background-color: var(--bg-tertiary);
    /* Ensure text is readable over images */
    text-shadow: 0 2px 4px rgba(0,0,0,0.8); 
}
html.light-mode .team-card h3, 
html.light-mode .team-card h4 {
    color: #ffffff !important; /* Force white text on cards even in light mode for contrast against dark overlay */
}
html.light-mode .team-card p {
    color: #e2e8f0 !important;
}

/* Glass Effect for other elements */
.glass-card {
    background: linear-gradient(145deg, var(--bg-tertiary), var(--bg-secondary));
    backdrop-filter: blur(10px);
    box-shadow: 5px 5px 15px rgba(0,0,0,0.2), 
                -5px -5px 15px rgba(255,255,255,0.05);
}

/* Smooth transitions */
div, p, h1, h2, h3, h4, button, input, select, header, .skill-card, span, i, footer, a, img {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* --- SCROLLBAR --- */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #475569; border-radius: 5px; border: 2px solid var(--bg-primary); }
::-webkit-scrollbar-thumb:hover { background: #64748b; }
.custom-scrollbar::-webkit-scrollbar { width: 6px; }
.custom-scrollbar::-webkit-scrollbar-thumb { background: #cbd5e1; border: none; }

/* --- HEADER & FOOTER --- */
#main-header {
    background-color: var(--header-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: transform 0.4s cubic-bezier(0.215, 0.610, 0.355, 1), background-color 0.3s ease; 
}
#main-header.hidden-header { transform: translateY(-100%); }

footer a { text-decoration: none; }

/* --- ANIMATIONS --- */
@keyframes rotate-in {
    0% { transform: rotate(-90deg) scale(0.5); opacity: 0; }
    100% { transform: rotate(0deg) scale(1); opacity: 1; }
}
.animate-rotate-in { animation: rotate-in 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275); }

@keyframes fadeInScaleUp {
    0% { opacity: 0; transform: scale(0.95) translateY(15px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}
.animate-fade-in-scale-up { 
    animation: fadeInScaleUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards; 
}

@keyframes bounceSlow {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
.animate-bounce-slow { animation: bounceSlow 2s infinite; }

@keyframes gradientXY {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}
.animate-gradient-x {
    background-size: 200% 200%;
    animation: gradientXY 3s ease infinite;
}

/* --- PROGRESS BAR --- */
.progress-floating-bar {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px -10px var(--shadow-color);
    position: relative;
    z-index: 10; 
}

/* --- BUTTONS --- */
.btn-action {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.2s ease;
}
.btn-action:hover {
    border-color: var(--accent-teal) !important;
    color: var(--accent-teal) !important;
    box-shadow: 0 0 20px var(--accent-teal-glow) !important;
    transform: translateY(-3px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-teal), #0d9488);
    color: white;
    border: 1px solid transparent;
}
.btn-primary:hover {
    box-shadow: 0 0 20px var(--accent-teal-glow) !important;
    transform: translateY(-2px);
}
.btn-primary:active { transform: translateY(-1px); }

/* --- CARDS --- */
.skill-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    z-index: 1;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.skill-card:not(.completed):hover {
    transform: translateY(-6px);
    border-color: var(--accent-teal);
    box-shadow: 0 15px 30px -5px rgba(20, 184, 166, 0.15);
}
.skill-card:not(.completed):hover h3 { color: var(--accent-teal); }
.skill-card:not(.completed):hover .group-hover-text-teal { color: var(--accent-teal); }

.skill-card.completed {
    border-color: var(--accent-orange) !important;
    background: linear-gradient(to bottom right, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.02));
}
.skill-card.completed:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 25px var(--accent-orange-glow);
}
.skill-card.completed h3 { color: var(--text-primary); } 

/* --- MODALS --- */
.modal-overlay {
    background-color: rgba(0, 0, 0, 0.75) !important; 
    backdrop-filter: blur(15px); 
    z-index: 100;
    transition: opacity 0.3s ease;
}
.modal-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    box-shadow: 0 30px 80px -15px rgba(0, 0, 0, 0.9); 
}
.modal-content h3, .modal-content h4 { color: var(--text-primary); }
.modal-content p, .modal-content li { color: var(--text-secondary); }

/* --- INPUTS --- */
input, select { color: var(--text-primary) !important; }
input::placeholder { color: var(--text-secondary); opacity: 0.6; }

@media (max-width: 640px) {
    .text-4xl { font-size: 2rem; }
    .text-5xl { font-size: 2.5rem; }
    .p-10, .p-12, .p-14 { padding: 1.5rem; }
}