/* css/main-styles.css */
@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@500;700&family=Space+Grotesk:wght@300;400;600;700&family=Noto+Sans+Sinhala:wght@400;500;600&display=swap');

:root {
    /* Dynamic Settings Variables */
    --bg-deep: #02040a;
    --glass-bg: rgba(10, 15, 30, 0.85);
    --text-main: #e2e8f0;
    --neon-blue: #00f3ff;
    --neon-gold: #ffd700;
    --neon-purple: #b026ff;
    --border-color: rgba(255, 255, 255, 0.08);
    --main-font: 'Space Grotesk', sans-serif;
}

html, body {
    margin: 0; padding: 0; width: 100%; height: 100%;
    font-family: var(--main-font); overflow: hidden;
}

.bg-theme { background-color: var(--bg-deep); color: var(--text-main); }
.font-si { font-family: 'Noto Sans Sinhala', sans-serif; line-height: 1.8; }
.title-font { font-family: 'Cinzel', serif; letter-spacing: 0.1em; }

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(30px); -webkit-backdrop-filter: blur(30px);
    border: 1px solid var(--border-color);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.9);
    color: var(--text-main);
    transition: all 0.4s ease;
}

.text-neon { color: var(--neon-blue); }
.border-neon { border-color: var(--neon-blue); }

.gradient-text {
    color: transparent; background-clip: text; -webkit-background-clip: text;
    background-image: linear-gradient(to right, var(--neon-blue), var(--neon-purple));
}

.custom-scroll::-webkit-scrollbar { width: 6px; }
.custom-scroll::-webkit-scrollbar-track { background: transparent; }
.custom-scroll::-webkit-scrollbar-thumb { background: var(--neon-blue); border-radius: 10px; opacity: 0.5; }

/* Buttons */
.btn-primary {
    background: linear-gradient(to right, #0f172a, #1e1b4b); color: #fff;
    padding: 1rem; border-radius: 0.75rem; border: 1px solid var(--neon-blue);
    font-weight: 700; text-transform: uppercase; letter-spacing: 0.15em;
    cursor: pointer; transition: all 0.3s ease; box-shadow: 0 0 15px var(--neon-blue);
}
.btn-primary:hover { transform: scale(1.02); box-shadow: 0 0 25px var(--neon-blue); }

.btn-secondary, .btn-tertiary, .btn-icon, .btn-lang {
    background: var(--glass-bg); color: var(--text-main); border: 1px solid var(--border-color);
    border-radius: 0.75rem; cursor: pointer; transition: all 0.3s ease;
}
.btn-secondary { padding: 0.75rem; text-transform: uppercase; font-size: 0.75rem; font-weight: 600; }
.btn-icon { width: 2.5rem; height: 2.5rem; border-radius: 50%; }
.btn-secondary:hover, .btn-icon:hover, .btn-lang:hover { border-color: var(--neon-blue); color: var(--neon-blue); }

.input-field {
    width: 100%; background: rgba(0, 0, 0, 0.6); border: 1px solid var(--border-color);
    border-radius: 0.75rem; padding: 1rem; color: var(--text-main); text-align: center;
    font-size: 0.875rem; transition: all 0.3s ease;
}
.input-field:focus { outline: none; border-color: var(--neon-blue); box-shadow: inset 0 0 10px var(--neon-blue); }

.auth-tab { padding-bottom: 0.25rem; font-weight: 700; text-transform: uppercase; color: #64748b; border-bottom: 2px solid transparent; cursor: pointer; background: none;}
.auth-tab.active { color: var(--neon-blue); border-bottom-color: var(--neon-blue); }

.fade-in { animation: fadeIn 0.5s ease forwards; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Math Native Formatting (For perfect Copy/Paste) */
.math-eq {
    font-family: "Cambria Math", "Times New Roman", serif;
    font-size: 1.3rem; letter-spacing: 0.05em; color: var(--neon-gold);
    display: inline-block; padding: 0.5rem 1rem;
    user-select: all; /* Allows easy copying */
}

/* =========================================================
   NEW LOGIN SCREEN (GLASSMORPHISM + ANIMATIONS)
   ========================================================= */

.new-login-full-screen {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    /* Animated Gradient Background for a Mystical Vibe */
    background: linear-gradient(-45deg, #02040a, #1a0b2e, #001a2c, #0a0a0a);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    overflow: hidden;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Background Animations */
.animation-container-left, .animation-container-right {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 200px; height: 200px;
    display: flex; justify-content: center; align-items: center;
    opacity: 0.2; /* Subtle look behind the glass */
    z-index: -1;
}
.animation-container-left { left: 15%; }
.animation-container-right { right: 15%; }

.animated-dharma-wheel {
    font-size: 180px;
    color: var(--neon-gold);
    filter: drop-shadow(0 0 20px rgba(255, 215, 0, 0.6));
    animation: spinSlow 20s linear infinite;
}

.animated-einstein-atom {
    font-size: 180px;
    color: var(--neon-blue);
    filter: drop-shadow(0 0 20px rgba(0, 243, 255, 0.6));
    animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes spinSlow {
    100% { transform: rotate(360deg); }
}

@keyframes pulseGlow {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 20px rgba(0, 243, 255, 0.6)); }
    50% { transform: scale(1.1); filter: drop-shadow(0 0 40px rgba(0, 243, 255, 0.9)); }
}


.login-glass-card {
    background: rgba(10, 15, 30, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 243, 255, 0.3);
    border-radius: 20px;
    padding: 3.5rem 2.5rem;
    width: 90%;
    max-w: 420px;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.8), inset 0 0 20px rgba(0, 243, 255, 0.1);
    text-align: center;
    z-index: 10;
}

.login-title {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.login-subtitle {
    margin-bottom: 2.5rem;
    letter-spacing: 3px;
}

.login-input-group {
    position: relative;
    margin-bottom: 2.5rem;
    text-align: left;
}

.login-input-group input {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 2px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem 0;
    color: #fff;
    font-size: 1.1rem;
    outline: none;
    transition: border-color 0.3s;
}

.login-input-group input:focus {
    border-bottom-color: var(--neon-blue);
}

.login-input-group label {
    position: absolute;
    top: 0; left: 0;
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.1rem;
    pointer-events: none;
    transition: 0.3s ease all;
}

.login-input-group input:focus ~ label,
.login-input-group input:valid ~ label {
    top: -20px;
    font-size: 0.85rem;
    color: var(--neon-blue);
}

.login-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
    font-size: 0.9rem;
    margin-bottom: 2.5rem;
}

.login-options a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}
.login-options a:hover { color: var(--neon-blue); }

.login-btn {
    width: 100%;
    background: #fff;
    color: #000;
    font-size: 1.2rem;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    padding: 1rem;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    margin-bottom: 1.5rem;
}
.login-btn:hover { 
    transform: scale(1.03); 
    box-shadow: 0 0 20px rgba(255,255,255,0.4); 
}

.register-link { color: rgba(255, 255, 255, 0.7); font-size: 0.9rem; }
.register-link span { color: #fff; font-weight: bold; cursor: pointer; transition: color 0.3s; }
.register-link span:hover { color: var(--neon-blue); }