@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --primary-gradient: linear-gradient(135deg, #84fab0 0%, #8fd3f4 100%);
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.05);
    --border-color: rgba(255, 255, 255, 0.1);
    --glass-blur: 15px;
    --accent: #84fab0;
    --danger: #f43f5e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 60px 20px;
    position: relative;
    overflow-y: auto;
}

/* Background Blobs */
.bg-blobs {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.blob {
    position: absolute;
    width: 450px;
    height: 450px;
    background: var(--primary-gradient);
    filter: blur(80px);
    /* Reduced blur */
    border-radius: 50%;
    opacity: 0.12;
    will-change: transform;
}

.blob-2 {
    right: -5%;
    bottom: -10%;
    background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
}

/* Calculator Card */
.calculator-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 28px;
    padding: 40px;
    width: 95%;
    max-width: 800px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
    animation: slideUp 0.6s ease-out;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

header {
    text-align: center;
    margin-bottom: 35px;
}

header h1 {
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

header p {
    color: #94a3b8;
    font-size: 0.95rem;
}

/* Settings Bar */
.settings-bar {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    max-width: 300px;
}

.setting-item label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.select-wrapper {
    position: relative;
    background: rgba(15, 23, 42, 0.4);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.select-wrapper select {
    width: 100%;
    background: #192638;
    border: none;
    padding: 12px 15px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    outline: none;
    cursor: pointer;
}

/* Course List */
.course-list-container {
    margin-bottom: 40px;
}

.course-header {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1fr 50px;
    gap: 15px;
    padding: 0 10px 10px 10px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 15px;
}

.header-col {
    font-size: 0.85rem;
    font-weight: 700;
    color: #64748b;
}

.course-rows {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.course-row {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1fr 50px;
    gap: 15px;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    padding: 10px;
    border-radius: 12px;
    transition: all 0.3s;
    animation: fadeInRow 0.3s ease-out;
}

@keyframes fadeInRow {
    from {
        opacity: 0;
        transform: scale(0.98);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.course-row input,
.course-row select {
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 8px;
    color: white;
    font-size: 0.95rem;
    outline: none;
    width: 100%;
}

.course-row input:focus,
.course-row select:focus {
    border-color: var(--accent);
}

.delete-btn {
    background: rgba(244, 63, 94, 0.1);
    border: 1px solid rgba(244, 63, 94, 0.2);
    color: var(--danger);
    width: 35px;
    height: 35px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
}

.delete-btn:hover {
    background: var(--danger);
    color: white;
}

.secondary-btn {
    background: rgba(132, 250, 176, 0.1);
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 12px 20px;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
}

.secondary-btn:hover {
    background: var(--accent);
    color: #0d1117;
}

/* Results Area */
.results-area {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
}

.main-result {
    text-align: left;
}

.res-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #94a3b8;
    display: block;
    margin-bottom: 5px;
}

.gpa-display {
    display: flex;
    align-items: baseline;
    gap: 5px;
}

#gpaValue {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--accent);
    text-shadow: 0 0 20px rgba(132, 250, 176, 0.3);
}

.scale-suffix {
    font-size: 1.2rem;
    color: #64748b;
    font-weight: 600;
}

.mini-results {
    display: flex;
    flex-direction: column;
    gap: 15px;
    min-width: 150px;
}

.mini-res-item {
    display: flex;
    flex-direction: column;
}

.mini-res-item span {
    font-size: 0.8rem;
    color: #64748b;
    font-weight: 600;
}

.mini-res-item strong {
    font-size: 1.1rem;
    color: white;
}

/* Footer */
.card-footer {
    margin-top: 30px;
    text-align: center;
}

.ghost-btn {
    background: transparent;
    border: none;
    color: #64748b;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.ghost-btn:hover {
    color: var(--danger);
}

/* Responsive */
@media (max-width: 600px) {
    .calculator-card {
        padding: 30px 15px;
    }

    .course-header {
        display: none;
    }

    .course-row {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        padding: 15px;
    }

    .course-name {
        grid-column: span 2;
    }

    .course-row .delete-btn {
        grid-column: span 2;
        width: 100%;
    }

    .results-area {
        flex-direction: column;
        text-align: center;
    }

    .main-result {
        text-align: center;
    }
}