:root {
    --bg-base: #0a0a0a;
    --card-bg: rgba(20, 20, 20, 0.65);
    --card-border: rgba(239, 68, 68, 0.25);
    --card-border-hover: rgba(239, 68, 68, 0.6);
    
    --text-main: #ffffff;
    --text-muted: #a1a1aa;
    
    --primary: #ef4444;
    --primary-grad: linear-gradient(135deg, #f97316 0%, #dc2626 100%);
    --primary-grad-hover: linear-gradient(135deg, #fb923c 0%, #ef4444 100%);
    
    --error-color: #f87171;
    --error-bg: rgba(239, 68, 68, 0.15);
    --success-color: #34d399;
    --fail-color: #f87171;
    
    --glass-blur: 20px;
    --shadow-glow: 0 0 40px rgba(239, 68, 68, 0.25);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-base);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Background Animations */
.bg-shapes {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
    animation: float 20s infinite ease-in-out alternate;
}

.shape-1 {
    top: -10%; left: -10%;
    width: 50vw; height: 50vw;
    background: rgba(249, 115, 22, 0.35);
    animation-delay: 0s;
}

.shape-2 {
    bottom: -20%; right: -10%;
    width: 60vw; height: 60vw;
    background: rgba(220, 38, 38, 0.25);
    animation-delay: -5s;
}

.shape-3 {
    top: 40%; left: 50%;
    width: 40vw; height: 40vw;
    background: rgba(234, 179, 8, 0.15);
    animation-delay: -10s;
    transform: translate(-50%, -50%);
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(10%, 10%) scale(1.1); }
}

.noise-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('data:image/svg+xml,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)" opacity="0.05"/%3E%3C/svg%3E');
    z-index: -1;
    pointer-events: none;
}

/* Common Layout */
.view-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.hidden {
    display: none !important;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--card-border);
    border-radius: 24px;
    box-shadow: var(--shadow-glow), inset 0 1px 0 rgba(255,255,255,0.1);
}

/* Login View */
.login-card {
    width: 100%;
    max-width: 420px;
    padding: 48px 40px;
    animation: slideUpFade 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideUpFade {
    0% { opacity: 0; transform: translateY(40px) scale(0.95); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
}

.brand-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.logo-icon {
    width: 56px;
    height: 56px;
    background: var(--card-bg);
    border: 1px solid var(--card-border-hover);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.2), 0 8px 24px rgba(0,0,0,0.4);
}

.logo-icon svg {
    width: 28px;
    height: 28px;
}

.login-card header {
    text-align: center;
    margin-bottom: 36px;
}

.login-card h1 {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 15px;
}

/* Input Fields */
.input-group {
    position: relative;
    margin-bottom: 24px;
}

.input-group input {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 16px 16px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 16px;
    outline: none;
    transition: all 0.3s ease;
}

.input-group label {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    transition: all 0.3s ease;
    font-size: 15px;
}

/* Floating Label Animation */
.input-group input:focus,
.input-group input:not(:placeholder-shown) {
    padding: 22px 16px 10px;
    border-color: rgba(239, 68, 68, 0.5);
    background: rgba(239, 68, 68, 0.05);
}

.input-group input:focus + label,
.input-group input:not(:placeholder-shown) + label {
    top: 14px;
    font-size: 11px;
    color: #fca5a5;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.input-highlight {
    position: absolute;
    bottom: -1px; left: 10%; right: 10%; height: 1px;
    background: var(--primary-grad);
    opacity: 0;
    transition: opacity 0.3s ease;
    box-shadow: 0 -2px 10px rgba(255, 255, 255, 0.8);
}

.input-group input:focus ~ .input-highlight {
    opacity: 1;
}

/* Buttons */
.btn-glow {
    width: 100%;
    background: var(--primary-grad);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 16px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.3), inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-glow::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--primary-grad-hover);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.btn-glow span {
    position: relative;
    z-index: 2;
}

.btn-glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.5), inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-glow:hover::before {
    opacity: 1;
}

.btn-glow:active {
    transform: translateY(1px);
}

.btn-glow:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.loader {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Alert Messages */
.error-alert {
    background: var(--error-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error-color);
    padding: 14px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
    10%, 90% { transform: translate3d(-1px, 0, 0); }
    20%, 80% { transform: translate3d(2px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
    40%, 60% { transform: translate3d(4px, 0, 0); }
}

/* Dashboard Nav */
.dashboard-container {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.glass-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 10, 15, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--card-border);
}

.nav-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon-small {
    width: 36px; height: 36px;
    background: var(--primary-grad);
    border-radius: 10px;
    display: flex; justify-content: center; align-items: center;
    color: #fff;
}

.logo-icon-small svg { width: 18px; height: 18px; }

.nav-brand h2 {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.text-gradient {
    background: var(--primary-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
}

.btn-icon {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-muted);
    width: 40px; height: 40px;
    border-radius: 50%;
    display: flex; justify-content: center; align-items: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border-color: rgba(255,255,255,0.3);
    transform: rotate(10deg);
}

/* Dashboard Main */
.dashboard-main {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    padding: 40px 24px;
    display: flex;
    flex-direction: column;
}

/* Loading State (Circular Progress) */
.loading-overlay {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.circular-loader-wrapper {
    position: relative;
    width: 140px; height: 140px;
    margin-bottom: 24px;
}

.progress-ring {
    transform: rotate(-90deg);
}

.progress-ring__circle {
    transition: stroke-dashoffset 0.3s ease-out;
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.5));
}

.percentage-container {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: baseline;
}

.percentage-text {
    font-size: 32px;
    font-weight: 700;
    background: var(--primary-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.percentage-sign {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-muted);
    margin-left: 2px;
}

.loading-status {
    font-size: 16px;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    animation: pulseText 1.5s infinite;
}

@keyframes pulseText {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
    padding-bottom: 40px;
}

/* Course Card */
.course-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--card-border);
    border-radius: 20px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.course-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 20px rgba(255, 255, 255, 0.15);
}

.card-header {
    padding: 24px;
    border-bottom: 1px solid var(--card-border);
    background: rgba(255, 255, 255, 0.02);
    position: relative;
    overflow: hidden;
}

/* Subtle glow inside header */
.card-header::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.1), transparent 70%);
    pointer-events: none;
}

.course-code {
    display: inline-block;
    padding: 6px 10px;
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.card-header h3 {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 16px;
    color: var(--text-main);
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.month-badge {
    font-size: 12px;
    color: var(--text-muted);
    background: rgba(0,0,0,0.3);
    padding: 4px 10px;
    border-radius: 12px;
}

.grade-badge {
    font-weight: 700;
    font-size: 14px;
    color: #ffffff;
    padding: 4px 12px;
    border-radius: 12px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--card-border);
}

.card-body {
    flex-grow: 1;
    padding: 12px 24px;
}

.mark-list {
    list-style: none;
}

.mark-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px dashed var(--card-border);
    transition: background 0.3s ease;
}

.mark-item:hover {
    background: rgba(255,255,255,0.02);
    border-radius: 6px;
    padding: 12px 8px;
    margin: 0 -8px;
}

.mark-item:last-child {
    border-bottom: none;
}

.mark-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mark-name {
    color: var(--text-main);
    font-size: 14px;
    font-weight: 500;
}

.mark-type {
    color: var(--text-muted);
    font-size: 12px;
}

.mark-score-container {
    text-align: right;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.mark-value {
    font-weight: 600;
    font-size: 15px;
    color: var(--text-main);
    letter-spacing: 0.05em;
}

.mark-status {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 2px 6px;
    border-radius: 4px;
    display: inline-block;
}

.mark-pass {
    background: rgba(52, 211, 153, 0.15);
    color: var(--success-color);
}

.mark-fail {
    background: rgba(248, 113, 113, 0.15);
    color: var(--fail-color);
}

.card-error {
    padding: 30px 20px;
    text-align: center;
    color: var(--error-color);
    font-size: 14px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .login-card {
        padding: 40px 24px;
    }
    
    .nav-content {
        padding: 16px;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .dashboard-main {
        padding: 24px 16px;
    }
    
    .cards-grid {
        grid-template-columns: 1fr; /* 1 column on mobile */
        gap: 20px;
    }
    
    .user-badge {
        display: none; /* Hide username on small screens */
    }
    
    .shape-1 { width: 80vw; height: 80vw; }
    .shape-2 { width: 90vw; height: 90vw; }

    .nav-tabs {
        order: 10;
        width: 100%;
        justify-content: center;
    }

    .search-bar-wrapper {
        padding: 0 10px;
    }

    .search-input-group {
        flex-direction: column;
    }

    .search-btn {
        width: 100%;
        border-radius: 12px;
    }

    #search-register {
        border-radius: 12px;
    }
}

@media (max-width: 480px) {
    .login-card h1 { font-size: 24px; }
    
    .circular-loader-wrapper {
        width: 120px; height: 120px;
    }
    
    .percentage-text { font-size: 28px; }

    .search-title { font-size: 24px; }
}

/* ====================== */
/* Nav Tabs (Menu Bar)    */
/* ====================== */
.nav-tabs {
    display: flex;
    gap: 4px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    padding: 4px;
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 8px 18px;
    border-radius: 10px;
    font-family: 'Outfit', sans-serif;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    white-space: nowrap;
}

.nav-tab:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.nav-tab.active {
    color: #fff;
    background: var(--primary-grad);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.nav-tab svg {
    flex-shrink: 0;
}

/* ====================== */
/* Search Page            */
/* ====================== */
.search-section {
    text-align: center;
    padding: 60px 20px 30px;
}

.search-header {
    margin-bottom: 40px;
}

.search-title {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.search-subtitle {
    color: var(--text-muted);
    font-size: 16px;
    max-width: 460px;
    margin: 0 auto;
}

.search-bar-wrapper {
    max-width: 650px;
    margin: 0 auto;
}

.search-input-group {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 6px;
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.search-input-group:focus-within {
    border-color: rgba(239, 68, 68, 0.5);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.search-icon {
    color: var(--text-muted);
    margin: 0 12px;
    flex-shrink: 0;
}

#search-register {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-family: 'Outfit', sans-serif;
    font-size: 16px;
    padding: 12px 8px;
    outline: none;
    min-width: 0;
}

#search-register::placeholder {
    color: rgba(161, 161, 170, 0.6);
}

.search-btn {
    background: var(--primary-grad);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 12px 28px;
    font-family: 'Outfit', sans-serif;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    white-space: nowrap;
    min-width: 100px;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.search-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.search-btn:active {
    transform: translateY(1px);
}

.search-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.search-btn .loader {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Search result student badge */
.search-result-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 30px;
    animation: slideUpFade 0.5s ease forwards;
}

.search-result-badge svg {
    color: var(--primary);
}