/* global-theme.css - Global Theme System for RN-TECH */

/* Theme Definitions */
:root {
    /* Default: RN Dark Blue */
    --accent-color: #2563eb;
    --accent-rgb: 37, 99, 235;
    --accent-glow: rgba(37, 99, 235, 0.3);
    --accent-transparent: rgba(37, 99, 235, 0.1);
    --accent-soft: rgba(37, 99, 235, 0.05);
    --bg-main: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
}

[data-theme='neon-purple'] {
    --accent-color: #8b5cf6;
    --accent-rgb: 139, 92, 246;
    --accent-glow: rgba(139, 92, 246, 0.3);
    --accent-transparent: rgba(139, 92, 246, 0.1);
    --accent-soft: rgba(139, 92, 246, 0.05);
    --bg-main: #0a0a0f;
    --card-bg: rgba(24, 24, 38, 0.7);
}

[data-theme='emerald-tech'] {
    --accent-color: #10b981;
    --accent-rgb: 16, 185, 129;
    --accent-glow: rgba(16, 185, 129, 0.3);
    --accent-transparent: rgba(16, 185, 129, 0.1);
    --accent-soft: rgba(16, 185, 129, 0.05);
    --bg-main: #060a08;
    --card-bg: rgba(12, 20, 16, 0.7);
}

[data-theme='crimson-red'] {
    --accent-color: #ef4444;
    --accent-rgb: 239, 68, 68;
    --accent-glow: rgba(239, 68, 68, 0.3);
    --accent-transparent: rgba(239, 68, 68, 0.1);
    --accent-soft: rgba(239, 68, 68, 0.05);
    --bg-main: #0d0a0a;
    --card-bg: rgba(26, 18, 18, 0.7);
}

[data-theme='midnight-black'] {
    --accent-color: #f8fafc; /* White/Silver accent on black */
    --accent-rgb: 248, 250, 252;
    --accent-glow: rgba(248, 250, 252, 0.2);
    --accent-transparent: rgba(248, 250, 252, 0.1);
    --accent-soft: rgba(248, 250, 252, 0.05);
    --bg-main: #000000;
    --card-bg: rgba(15, 15, 15, 0.9);
    --text-muted: #64748b;
    --border-color: rgba(255, 255, 255, 0.1);
}

/* Global Transition System — Targeted only (wildcard causes Android lag) */
/* Only transition color-related properties on elements that need it */
:root {
    --theme-transition-duration: 0.35s;
    --theme-transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Apply theme transitions only to elements that visually change on theme switch */
body,
.app-container,
.stat-card, .class-card, .history-card, .report-card,
.analytic-card, .profile-main-card, .setting-item,
.dashboard-header, .ts-header, .reports-header, .app-header,
.bottom-nav, .nav-item, .nav-icon-wrapper,
.action-icon, .edit-modal-content, .filter-panel select,
.search-input-wrapper, .filter-btn, .back-btn,
.sc-stats, .sc-bar-track, .analytic-card,
.btn-primary, .btn-secondary, .rn-input, .premium-edit-btn {
    transition:
        background-color var(--theme-transition-duration) var(--theme-transition-easing),
        border-color var(--theme-transition-duration) var(--theme-transition-easing),
        box-shadow var(--theme-transition-duration) var(--theme-transition-easing),
        color var(--theme-transition-duration) var(--theme-transition-easing);
    will-change: auto; /* Let browser decide — avoid forcing layers on everything */
}

/* Interactive elements keep their own transform transitions */
.stat-card, .class-card, .history-card, .analytic-card {
    transition:
        background-color var(--theme-transition-duration) var(--theme-transition-easing),
        border-color var(--theme-transition-duration) var(--theme-transition-easing),
        box-shadow var(--theme-transition-duration) var(--theme-transition-easing),
        color var(--theme-transition-duration) var(--theme-transition-easing),
        transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Theme Switching Animation Overlay */
.theme-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, var(--accent-color) 0%, transparent 70%);
    z-index: 10000;
    pointer-events: none;
    opacity: 0;
    mix-blend-mode: plus-lighter;
    transition: none !important;
}

/* Theme Switch Overlay — lightweight opacity-only animation (no blur = no GPU lag) */
@keyframes themeWarp {
    0%   { opacity: 0; transform: scale(1); }
    30%  { opacity: 0.25; transform: scale(1.05); }
    100% { opacity: 0; transform: scale(1.1); }
}

.theme-transition-active .theme-transition-overlay {
    animation: themeWarp 0.35s ease-out forwards;
}

/* Enhanced Animated Background (Direct Student Portal Import) */
body {
    background-color: var(--bg-main);
    background-image: 
        radial-gradient(circle at 0% 0%, var(--accent-glow) 0%, transparent 50%),
        radial-gradient(circle at 100% 100%, var(--accent-glow) 0%, transparent 50%);
    background-attachment: fixed;
    position: relative;
    overflow-x: hidden;
}

/* Pause background animations during theme switch to prevent jank */
.theme-transition-active body::after,
.theme-transition-active body::before {
    animation-play-state: paused;
}

/* Animated background — use transform instead of background-position for GPU compositing */
body::after {
    content: '';
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(125deg, transparent 45%, var(--accent-transparent) 50%, transparent 55%);
    background-size: 200% 200%;
    animation: bgSweep 12s linear infinite;
    pointer-events: none;
    z-index: -1;
    opacity: 0.4;
    will-change: background-position;
}

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

body::before {
    content: '';
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: radial-gradient(circle at 30% 40%, var(--accent-soft) 0%, transparent 60%);
    pointer-events: none;
    z-index: -1;
    /* Removed mousemove-reactive animation — too expensive on mobile */
    animation: bgBreathe 10s ease-in-out infinite;
    will-change: opacity;
}

@keyframes bgBreathe {
    0%, 100% { opacity: 0.25; }
    50%       { opacity: 0.5; }
}

/* Global Card & Glass Enhancements */
.stat-card, .class-card, .history-card, .report-card, .setting-item, .analytic-card, .profile-main-card {
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), 
                box-shadow 0.4s ease, 
                border-color 0.4s ease,
                background-color 0.6s ease !important;
}

.stat-card:hover, .class-card:hover, .history-card:hover, .analytic-card:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3), 0 0 12px var(--accent-transparent);
    border-color: var(--accent-color);
}

/* Use simple scale on mobile — no translateY to avoid reflow */
@media (max-width: 480px) {
    .stat-card:hover, .class-card:hover, .history-card:hover, .analytic-card:hover {
        transform: none; /* Disable hover transforms on touch devices */
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
    }
}

/* --- Premium RN-TECH Branding Animations (Living Cyber-Tech) --- */
.app-brand {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 800;
    cursor: default;
    user-select: none;
    position: relative;
    padding: 10px;
    animation: logoFloat 4.5s ease-in-out infinite;
    z-index: 5;
}

/* Particle Aura Effect */
.app-brand::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 140%;
    height: 140%;
    background: radial-gradient(circle at 20% 30%, var(--accent-glow) 0%, transparent 4%),
                radial-gradient(circle at 80% 70%, var(--accent-glow) 0%, transparent 4%),
                radial-gradient(circle at 40% 80%, var(--accent-glow) 0%, transparent 4%),
                radial-gradient(circle at 70% 20%, var(--accent-glow) 0%, transparent 4%);
    background-size: 100% 100%;
    filter: blur(2px);
    opacity: 0.4;
    animation: particlesDrift 8s linear infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes particlesDrift {
    0% { transform: translate(-50%, -50%) rotate(0deg); opacity: 0.3; }
    50% { opacity: 0.6; }
    100% { transform: translate(-50%, -50%) rotate(360deg); opacity: 0.3; }
}

.brand-rn {
    font-family: 'Inter', sans-serif;
    font-style: italic;
    background: linear-gradient(135deg, #2563eb, #fff, #8b5cf6, #2563eb);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: logoGradient 6s ease infinite, logoShimmer 4s linear infinite, logoGlow 3s ease-in-out infinite;
    filter: drop-shadow(0 0 12px var(--accent-glow));
    letter-spacing: -1.5px;
    position: relative;
}

/* 3D Metallic Light Reflection */
.brand-rn::after {
    content: 'RN-';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(transparent 45%, rgba(255,255,255,0.4) 50%, transparent 55%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: logoReflection 5s ease-in-out infinite;
    pointer-events: none;
}

.brand-tech {
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    opacity: 0.9;
    font-weight: 300;
    letter-spacing: 2px;
    position: relative;
    margin-left: 2px;
    text-shadow: 0 0 10px rgba(255,255,255,0.2);
}

.brand-tech::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    box-shadow: 0 0 15px var(--accent-color);
    animation: logoLinePulse 5s ease-in-out infinite;
}

/* Animation Keyframes */
@keyframes logoFloat {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-6px) scale(1.02); }
}

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

@keyframes logoGlow {
    0%, 100% { filter: drop-shadow(0 0 8px var(--accent-glow)); opacity: 0.9; }
    50% { filter: drop-shadow(0 0 18px var(--accent-glow)); opacity: 1; }
}

@keyframes logoShimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

@keyframes logoReflection {
    0%, 100% { transform: translateY(-5px); opacity: 0; }
    50% { transform: translateY(5px); opacity: 0.5; }
}

@keyframes logoLinePulse {
    0%, 100% { width: 0; left: 50%; opacity: 0; }
    30%, 70% { width: 100%; left: 0; opacity: 1; }
}

/* --- Premium Developer Signature (Living Cyber-Tech) --- */
.dev-credit {
    margin-top: 32px;
    display: flex;
    justify-content: center;
    padding-bottom: env(safe-area-inset-bottom);
    opacity: 0;
    animation: fadeIn 1.2s ease-out forwards 1.5s;
}

.brand-signature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    cursor: default;
    user-select: none;
    position: relative;
    padding: 8px 16px;
    animation: sigFloat 5s ease-in-out infinite;
}

.sig-prefix {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-muted);
    letter-spacing: 2px;
    opacity: 0.7;
}

.sig-name {
    font-size: 13px;
    font-weight: 800;
    background: linear-gradient(135deg, #2563eb, #fff, #a855f7, #2563eb);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: logoGradient 6s ease infinite, sigGlow 3s ease-in-out infinite;
    filter: drop-shadow(0 0 8px var(--accent-glow));
    letter-spacing: 1.5px;
    position: relative;
}

/* Metallic Shine Sweep */
.sig-name::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
    transform: skewX(-25deg);
    animation: sigShimmer 4s infinite 2s;
    pointer-events: none;
}

/* Glowing Underline */
.sig-name::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 10%;
    width: 80%;
    height: 1.5px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
    box-shadow: 0 0 10px var(--accent-color);
    animation: sigLinePulse 4s ease-in-out infinite;
}

/* Particle Aura for Signature */
.brand-signature::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle at 10% 20%, var(--accent-glow) 0%, transparent 5%),
                radial-gradient(circle at 90% 80%, var(--accent-glow) 0%, transparent 5%);
    filter: blur(1px);
    opacity: 0.3;
    animation: sigParticles 10s linear infinite;
    pointer-events: none;
    z-index: -1;
}

/* Signature Specific Keyframes */
@keyframes sigFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

@keyframes sigGlow {
    0%, 100% { filter: drop-shadow(0 0 5px var(--accent-glow)); opacity: 0.8; }
    50% { filter: drop-shadow(0 0 12px var(--accent-glow)); opacity: 1; }
}

@keyframes sigShimmer {
    0% { left: -100%; }
    100% { left: 200%; }
}

@keyframes sigLinePulse {
    0%, 100% { transform: scaleX(0.5); opacity: 0.3; }
    50% { transform: scaleX(1.2); opacity: 0.8; }
}

@keyframes sigParticles {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes fadeIn {
    to { opacity: 1; }
}

/* ── RN-TECH Toast Notification ── */
.rn-toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(16, 185, 129, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 10000;
}

.rn-toast.error {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

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

/* ── Global Number Input Spinner Fix & Dark Theme Match ── */

/* Set global dark color scheme so default browser popups (like date picker calendars, autofill dropdowns) match the RN-TECH dark theme automatically */
:root {
    color-scheme: dark;
}

/* Hide default browser spinners for number inputs */
input[type="number"]::-webkit-inner-spin-button, 
input[type="number"]::-webkit-outer-spin-button { 
    -webkit-appearance: none; 
    margin: 0; 
}

input[type="number"] {
    -moz-appearance: textfield; /* Firefox */
}