:root {
    --bg-gradient: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%);
    /* Deeper, more premium dark blue */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-color: #E2E2E2;
    --accent-color: #4CC9F0;
    /* Cyan accent */
    --accent-secondary: #F72585;
    /* Pink accent */
    --font-family: 'Outfit', sans-serif;
    --card-radius: 24px;
    --header-height: 70px;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-color);
    min-height: 100vh;
    background: var(--bg-gradient);
    overflow-x: hidden;
    /* Prevent horizontal scroll */
}

/* --- Layout Structure --- */
.app-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
    border-radius: var(--card-radius);
    margin-bottom: 20px;
}

.flat-header {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
}

.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.site-title {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    opacity: 0.9;
}

.header-date {
    font-size: 0.95rem;
    opacity: 0.7;
}

.auth-separator {
    width: 1px;
    height: 20px;
    background: var(--glass-border);
}

.auth-wrapper {
    display: flex;
    align-items: center;
    gap: 15px;
}

#user-info {
    font-size: 0.9rem;
    font-weight: 500;
}

/* Bento Grid */
.bento-grid {
    display: grid;
    grid-template-columns: 320px 1fr 340px;
    /* Fixed sides, flexible center */
    gap: 25px;
    flex: 1;
    overflow: hidden;
    /* Prevent main scroll, inner cards scroll */
}

.grid-column {
    display: flex;
    flex-direction: column;
    gap: 25px;
    overflow-y: auto;
    /* Scroll internally if needed */
    padding-right: 5px;
    /* Space for scrollbar */
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* --- Cards & Panels --- */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
}

.bento-card {
    border-radius: var(--card-radius);
    padding: 1.5rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
}

.left-col .bento-card {
    flex: 1;
    max-height: 48%;
    /* Split height */
}

.bento-card:hover {
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

.card-header h3 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    font-weight: 600;
    color: var(--accent-color);
}

/* --- Daily Life (Left Col) --- */
.daily-content-area {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow-y: auto;
}

.daily-img {
    width: 100%;
    border-radius: 16px;
    margin-bottom: 12px;
    object-fit: cover;
    aspect-ratio: 1 / 1;
    /* Square crop */
}

.daily-desc {
    font-size: 0.95rem;
    line-height: 1.6;
    opacity: 0.85;
    flex-grow: 1;
}

/* Editor Inputs */
.file-input {
    width: 100%;
    font-size: 0.8rem;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.7);
}

.desc-textarea {
    width: 100%;
    height: 80px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 10px;
    color: white;
    resize: none;
    margin-bottom: 8px;
    font-family: inherit;
}

.save-daily-btn {
    width: 100%;
    padding: 10px;
    background: var(--accent-color);
    color: #1A1A2E;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
}

.download-btn {
    margin-bottom: 12px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid var(--glass-border);
    color: var(--accent-color);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
    width: 100%;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
}

/* --- Center Column (Hero & Todo) --- */
.center-col {
    justify-content: center;
    align-items: center;
}

.hero-section {
    text-align: center;
    margin-bottom: 40px;
    animation: fadeIn 0.8s ease-out;
}

.clock-display {
    font-size: 6rem;
    font-weight: 700;
    line-height: 1;
    background: linear-gradient(to bottom, #fff, rgba(255, 255, 255, 0.6));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -3px;
    margin-bottom: 10px;
}

.greeting-text {
    font-size: 2rem;
    font-weight: 300;
    opacity: 0.9;
}

.todo-section {
    width: 100%;
    max-width: 500px;
}

.todo-section h3 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.todo-list {
    max-height: 350px;
    overflow-y: auto;
    padding-right: 5px;
}

/* Todo Items */
.todo-item {
    background: rgba(255, 255, 255, 0.07);
    border-radius: 12px;
    padding: 12px 15px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    transition: all 0.2s ease;
}

.todo-item:hover {
    background: rgba(255, 255, 255, 0.12);
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

input[type="text"],
input[type="time"],
input[type="password"] {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    padding: 12px;
    border-radius: 12px;
    color: white;
    font-family: inherit;
    outline: none;
    color-scheme: dark;
    /* Fix browser control colors */
}

input[type="time"] {
    min-width: 130px;
    /* Ensure click area is large enough */
    cursor: pointer;
}

input[type="text"]:focus {
    border-color: var(--accent-color);
}

button {
    cursor: pointer;
    transition: all 0.2s;
}

#add-btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid var(--glass-border);
    padding: 0 20px;
    border-radius: 12px;
}

#send-request-btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid var(--glass-border);
    padding: 0 20px;
    border-radius: 12px;
    height: 50px;
    /* Smaller than textarea (80px) */
    align-self: center;
    /* Center vertically if in flex container */
    font-size: 0.9rem;
}

#add-btn:hover,
#send-request-btn:hover {
    background: white;
    color: #1A1A2E;
}

.secondary-btn {
    background: rgba(76, 201, 240, 0.15);
    /* Accent color tint */
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    padding: 10px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.secondary-btn:hover {
    background: var(--accent-color);
    color: #1A1A2E;
}

/* --- Right Column (Requests & Admin) --- */
.request-section {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.request-input-group textarea {
    width: 100%;
    height: 80px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px;
    color: white;
    resize: none;
    font-family: inherit;
    margin-bottom: 10px;
}

.request-list-container,
.user-list-container {
    flex: 1;
    overflow-y: auto;
    margin-top: 15px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 16px;
    padding: 10px;
}

.request-item,
.user-item {
    padding: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.9rem;
}

.grade-select {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 4px;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
}

.grade-select:focus {
    border-color: var(--accent-color);
    outline: none;
}

.divider {
    border: 0;
    height: 1px;
    background: var(--glass-border);
    margin: 20px 0;
}

/* --- Auth Button --- */
#auth-btn {
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    color: white;
    border-radius: 20px;
    white-space: nowrap;
    /* Prevent vertical stacking */
}

#auth-btn:hover {
    background: var(--accent-color);
    color: #1A1A2E;
    border-color: var(--accent-color);
}

/* --- Modals --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    width: 340px;
    text-align: center;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: white;
    cursor: pointer;
}

.modal-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--glass-border);
}

.tab-btn {
    flex: 1;
    background: none;
    border: none;
    color: white;
    padding: 10px;
    opacity: 0.6;
    cursor: pointer;
}

.tab-btn.active {
    opacity: 1;
    border-bottom: 2px solid var(--accent-color);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#auth-submit-btn {
    padding: 12px;
    background: var(--accent-color);
    color: #1A1A2E;
    border: none;
    border-radius: 12px;
    font-weight: bold;
}

/* Responsive */
@media (max-width: 1200px) {
    .bento-grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
    }

    .left-col {
        grid-row: span 2;
    }
}

@media (max-width: 900px) {
    .bento-grid {
        display: flex;
        flex-direction: column;
        overflow-y: auto;
    }

    .app-container {
        height: auto;
        padding: 10px;
    }

    .clock-display {
        font-size: 4rem;
    }
}

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

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