/* Advanced CGPA Analyzer Pro Styles */
:root {
    --cgpa-primary: #6c63ff;
    --cgpa-secondary: #00f2ff;
    --cgpa-accent: #ff007f;
    --cgpa-glass: rgba(255, 255, 255, 0.03);
    --cgpa-border: rgba(255, 255, 255, 0.1);
    --cgpa-bg-dark: #0a0a0c;
    --grad-premium: linear-gradient(135deg, var(--cgpa-primary) 0%, var(--cgpa-secondary) 100%);
    --glow-cyan: 0 0 15px rgba(0, 242, 255, 0.4);
    --glow-purple: 0 0 15px rgba(108, 99, 255, 0.4);
}

.gradient-text-glow {
    background: linear-gradient(90deg, #00f2ff, #6c63ff, #ff007f);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 3s linear infinite;
    font-weight: 700;
    text-shadow: 0 0 10px rgba(0, 242, 255, 0.1); /* Reduced brightness */
}

.subtitle-glow {
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 0.5px;
    filter: drop-shadow(0 0 4px rgba(0, 242, 255, 0.1)); /* Softened glow */
}

.premium-emoji {
    display: inline-flex;
    filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.2)); /* Softened emoji glow */
    transform: scale(1.1);
    margin-right: 4px;
    animation: float 3s ease-in-out infinite;
}

@keyframes shine {
    to { background-position: 200% center; }
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1.1); }
    50% { transform: translateY(-4px) scale(1.15); }
}

.cgpa-container {
    padding: 2rem;
    color: #fff;
    font-family: 'Inter', sans-serif;
    max-width: 1400px;
    margin: 0 auto;
}

.cgpa-header {
    margin-bottom: 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.cgpa-title-group h1 {
    font-size: 2.5rem;
    margin: 0;
    font-weight: 800;
}

.cgpa-badge {
    background: var(--grad-premium);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    vertical-align: middle;
    margin-left: 10px;
}

.cgpa-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

@media (max-width: 1100px) {
    .cgpa-grid {
        grid-template-columns: 1fr;
    }
}

.glass-card-premium {
    background: var(--cgpa-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--cgpa-border);
    border-radius: 24px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.glass-card-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
}

.module-card {
    margin-bottom: 2rem;
}

/* SGPA ENGINE */
.sgpa-engine-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.subject-row {
    display: grid;
    grid-template-columns: 2.5fr 1fr 1fr 40px;
    gap: 1rem;
    align-items: center;
    background: rgba(255,255,255,0.02);
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 0.8rem;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.subject-row:hover {
    background: rgba(255,255,255,0.05);
    border-color: rgba(108, 99, 255, 0.3);
}

.input-minimal {
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--cgpa-border);
    color: #fff;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.9rem;
    width: 100%;
    transition: border-color 0.2s;
}

.input-minimal:focus {
    border-color: var(--cgpa-primary);
    outline: none;
    background: rgba(0,0,0,0.5);
}

.grade-display {
    text-align: center;
    font-weight: 700;
    font-size: 1.1rem;
    min-width: 40px;
}

.remove-btn {
    background: none;
    border: none;
    color: #ff4757;
    cursor: pointer;
    font-size: 1.2rem;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.remove-btn:hover {
    opacity: 1;
}

.add-row-btn {
    background: rgba(108, 99, 255, 0.1);
    border: 1px dashed var(--cgpa-primary);
    color: var(--cgpa-primary);
    width: 100%;
    padding: 12px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    margin-top: 1rem;
}

.add-row-btn:hover {
    background: rgba(108, 99, 255, 0.2);
}

.semester-slot {
    background: rgba(255,255,255,0.01) !important;
    border-color: rgba(255,255,255,0.05) !important;
}

.semester-slot div:first-child {
    font-size: 0.85rem;
    color: var(--cgpa-secondary);
    opacity: 0.8;
}

/* ANALYTICS */
.analytics-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .cgpa-container {
        width: 100%;
        max-width: 100%;
        padding: 0.75rem;
        overflow-x: hidden;
    }

    .cgpa-grid,
    .left-col,
    .right-col {
        width: 100%;
        max-width: 100%;
        min-width: 0;
    }
    
    .cgpa-header { 
        text-align: center; 
        justify-content: center; 
        flex-direction: column;
        gap: 0.25rem; /* Ultra tight gap */
        margin-bottom: 1rem;
        padding-bottom: 0.5rem;
    }

    .glass-card-premium {
        padding: 1.25rem 0.75rem !important;
    }

    .cgpa-title-group h1 { 
        font-size: clamp(1rem, 4.5vw, 1.2rem);
        line-height: 1.2;
        margin: 0;
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: center;
        gap: 6px;
    }
    
    .cgpa-title-group p { 
        display: none;
    }
    
    .header-actions {
        margin-top: 0.5rem;
    }

    .header-actions .btn {
        padding: 6px 14px;
        font-size: 0.75rem;
        min-height: 34px;
    }

    .cgpa-badge {
        display: inline-flex;
        align-items: center;
        margin: 0;
        font-size: 0.55rem;
        padding: 2px 8px;
        letter-spacing: 0.5px;
        font-weight: 800;
        white-space: nowrap;
    }

    .sgpa-engine-header { 
        flex-direction: column; 
        align-items: center; 
        text-align: center;
        gap: 1.25rem; 
        margin-bottom: 2rem;
    }
    
    .sgpa-engine-header h3,
    .subtitle-glow {
        font-size: clamp(0.85rem, 3.8vw, 1rem) !important;
        width: 100%;
        margin: 0;
        display: flex !important;
        flex-direction: row !important;
        flex-wrap: nowrap !important;
        align-items: center;
        justify-content: center;
        gap: 4px !important;
        text-align: center;
    }

    .gradient-text-glow {
        white-space: nowrap !important;
        overflow: visible;
    }

    .premium-emoji {
        transform: scale(0.85) !important;
        margin-right: 0 !important;
    }

    .sgpa-engine-header div { 
        width: 100%; 
        display: flex; 
        flex-direction: column;
        gap: 1rem; 
    }
    
    .sgpa-engine-header .btn { 
        width: 100%; 
        padding: 12px;
    }

    .subject-row {
        display: grid !important;
        grid-template-columns: 1fr 1.2fr 45px !important; /* Forces single line for inputs */
        gap: 0.5rem;
        padding: 0.75rem;
        align-items: center;
        background: rgba(255, 255, 255, 0.03);
        border-radius: 12px;
    }
    
    .subject-row .sub-name { 
        grid-column: 1 / 4 !important; /* Takes full top row (3 columns) */
        width: 100% !important;
        font-weight: 600; 
        padding: 10px;
        font-size: 0.9rem;
        margin-bottom: 2px;
    }
    
    .subject-row .sub-credits,
    .subject-row .sub-grade {
        width: 100% !important;
        padding: 10px 6px !important; /* Tighter padding for fit */
        font-size: 0.85rem !important;
        min-width: 0; /* Prevents grid blowout */
    }
    
    .subject-row .remove-btn {
        width: 38px !important;
        height: 38px !important;
        display: flex !important;
        align-items: center;
        justify-content: center;
        border-radius: 8px;
        background: rgba(255, 71, 87, 0.1) !important;
        color: #ff4757;
        font-size: 1.1rem !important;
        position: static !important; /* Back into grid flow */
        margin: 0 !important;
    }

    .subject-row .remove-btn:active {
        background: rgba(255, 71, 87, 0.2);
        transform: scale(0.95);
    }

    .analytics-summary { 
        display: grid !important;
        grid-template-columns: 1fr 1fr !important;
        gap: 0.75rem !important; 
        justify-content: center;
    }

    .score-card:last-child {
        grid-column: 1 / -1; /* Spans full width for centering logic */
        width: 100%;
        max-width: 200px; /* Limits width to match others */
        margin: 0 auto; /* Centers the card horizontally */
    }

    .score-card {
        padding: 1rem 0.5rem !important;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .score-card .val {
        font-size: 1.5rem !important;
    }

    .score-card .label {
        font-size: 0.65rem !important;
    }

    .chart-container {
        height: 220px !important; /* Slightly taller for better label visibility */
        margin-top: 1rem;
        padding: 0 5px;
    }
    
    .glass-card-premium {
        width: 100%;
        padding: 1.25rem;
        border-radius: 20px;
    }
    
    .btn-circle { width: 45px; height: 45px; bottom: 0.75rem; right: 0.75rem; font-size: 1.2rem; }
    
    .chart-container { height: 180px; margin-top: 1rem; }

    .left-col .module-card:nth-child(2) > div:first-child {
        display: flex !important;
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1rem;
    }

    .left-col .module-card:nth-child(2) h3 {
        width: 100%;
        font-size: 1.1rem;
        white-space: normal;
    }

    .planner-form > div[style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    .semester-slot {
        grid-template-columns: 1.5fr 1fr 1fr !important; /* Balanced for Semester X | SGPA | Credits */
        padding: 0.85rem !important;
        gap: 0.5rem !important;
        align-items: center;
    }

    .semester-slot div:first-child {
        white-space: nowrap !important; /* Prevents Semester X from wrapping */
        font-size: 0.85rem !important;
        min-width: 0;
    }

    .semester-slot .input-minimal {
        padding: 8px 6px !important;
        font-size: 0.8rem !important;
    }
}

@media (max-width: 480px) {
    .cgpa-container {
        padding: 0.5rem;
    }

    .cgpa-grid .glass-card-premium {
        width: calc(100% - 0.75rem);
        margin-left: auto;
        margin-right: auto;
    }

    .module-card {
        margin-bottom: 1rem;
    }

    .subject-row {
        grid-template-columns: 1fr; /* Stack everything on very small screens */
    }

    .subject-row .sub-name, .subject-row div:first-child { grid-column: auto; }

    .planner-form > div[style*="grid-template-columns"] {
        display: grid !important;
        grid-template-columns: 1fr 1fr !important; /* Matches desktop two-column layout */
        gap: 0.75rem !important;
    }

    .planner-form label {
        font-size: 0.65rem !important; /* Smaller to prevent wrapping */
        letter-spacing: 0.2px;
        white-space: nowrap;
    }

    .planner-form > div[style*="display: flex"] {
        display: flex !important;
        flex-direction: row !important;
        gap: 0.5rem !important;
        margin-top: 1rem !important;
    }

    .planner-form .btn {
        padding: 8px 4px !important; /* Tighter padding for mobile fit */
        font-size: 0.8rem !important;
        height: 42px !important;
        flex: 1; /* Equal width for both buttons */
    }

    .planner-form .btn-primary {
        flex: 1.5; /* Slightly more weight to the primary action */
    }

    .planner-form .btn i {
        margin-right: 4px;
    }

    .right-col .glass-card-premium:last-child {
        margin-bottom: 5rem;
    }

    .left-col .module-card:nth-child(2) h3 {
        font-size: 0.9rem;
    }

    .left-col .module-card:nth-child(2) .cgpa-badge {
        padding: 4px 8px;
        font-size: 0.65rem;
    }
}

.score-card {
    text-align: center;
    padding: 1.5rem;
    background: rgba(255,255,255,0.03);
    border-radius: 20px;
    border: 1px solid var(--cgpa-border);
}

.score-card .val {
    font-size: 2.5rem;
    font-weight: 800;
    display: block;
    margin: 5px 0;
    background: var(--grad-premium);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.score-card .label {
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 1px;
    color: var(--text-dim);
}

/* CHARTS */
.chart-container {
    height: 250px;
    margin-top: 2rem;
}

/* PLANNER */
.planner-form .form-group {
    margin-bottom: 0.8rem;
}

.planner-form label {
    display: block;
    font-size: 0.75rem;
    color: rgba(255,255,255,0.5);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.plan-result {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(108,99,255,0.1) 0%, rgba(0,242,255,0.05) 100%);
    border: 1px solid rgba(108, 99, 255, 0.2);
    display: none;
}

.plan-result.active {
    display: block;
    animation: slideUp 0.4s ease-out;
}

/* UTILS */
.grad-O { color: #00f2ff; text-shadow: 0 0 10px rgba(0, 242, 255, 0.5); }
.grad-A-plus { color: #2ecc71; }
.grad-A { color: #27ae60; }
.grad-B-plus { color: #f1c40f; }
.grad-F { color: #ff4757; }

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.division-badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-top: 10px;
}

.div-hons { background: rgba(0, 242, 255, 0.15); color: #00f2ff; border: 1px solid #00f2ff; }
.div-first { background: rgba(46, 204, 113, 0.15); color: #2ecc71; border: 1px solid #2ecc71; }
.div-fail { background: rgba(255, 71, 87, 0.15); color: #ff4757; border: 1px solid #ff4757; }

.floating-action {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--grad-premium);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    border: none;
    box-shadow: 0 8px 25px rgba(108, 99, 255, 0.4);
    cursor: pointer;
    transition: transform 0.3s;
}

.btn-circle:hover {
    transform: scale(1.1) rotate(90deg);
}

.insight-chip {
    background: rgba(255,255,255,0.05);
    padding: 10px;
    border-radius: 10px;
    margin-bottom: 10px;
    font-size: 0.85rem;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.insight-chip i { color: var(--cgpa-secondary); margin-top: 3px; }