/* Global Styles & Variables */
:root {
    --bg-color: #0b0f19;
    --card-bg: rgba(22, 28, 45, 0.7);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --primary-gradient: linear-gradient(135deg, #7c3aed 0%, #2563eb 100%);
    --primary-color: #7c3aed;
    --primary-hover: #6d28d9;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --warning-color: #f59e0b;
    --font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition-speed: 0.3s;
}

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

body {
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(at 0% 0%, rgba(124, 58, 237, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(37, 99, 235, 0.15) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    flex: 1;
}

/* Header & Navbar */
header {
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition-speed), transform var(--transition-speed);
}

.nav-links a:hover {
    color: var(--text-primary);
    transform: translateY(-1px);
}

.nav-links a.active {
    color: #a78bfa;
    border-bottom: 2px solid #7c3aed;
    padding-bottom: 4px;
}

.user-status {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    padding: 0.4rem 1rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-status.logged-in {
    border-color: rgba(16, 185, 129, 0.3);
}

.user-status button {
    background: transparent;
    border: none;
    color: #f87171;
    cursor: pointer;
    font-weight: 600;
    margin-left: 0.5rem;
    font-size: 0.85rem;
}

.user-status button:hover {
    text-decoration: underline;
}

/* Dashboard / Grid Layout */
.dashboard-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, #ffffff, #9ca3af);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
}

.dashboard-subtitle {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.grid-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

/* Glassmorphic Cards */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(124, 58, 237, 0.3);
}

.card-icon {
    font-size: 2.2rem;
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex: 1;
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"],
select,
textarea {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    font-family: var(--font-family);
    font-size: 0.95rem;
    width: 100%;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.25);
}

textarea {
    resize: vertical;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-family);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition-speed), transform 0.1s, box-shadow var(--transition-speed);
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 100%);
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-danger {
    background: var(--danger-color);
    color: #ffffff;
}

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

.btn-success {
    background: var(--secondary-color);
    color: #ffffff;
}

.btn-success:hover {
    background: #059669;
}

.btn:active {
    transform: scale(0.98);
}

/* Tables styling */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 1.5rem 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--card-border);
    background: rgba(17, 24, 39, 0.4);
}

th, td {
    padding: 1rem 1.25rem;
    text-align: left;
}

th {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--card-border);
}

td {
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    font-size: 0.95rem;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-done {
    background-color: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-pending {
    background-color: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Drag and Drop Zone */
.upload-zone {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 2.5rem 1.5rem;
    text-align: center;
    background: rgba(15, 23, 42, 0.3);
    cursor: pointer;
    transition: border-color var(--transition-speed), background-color var(--transition-speed);
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--primary-color);
    background: rgba(124, 58, 237, 0.05);
}

.upload-icon {
    font-size: 2.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.upload-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.upload-text strong {
    color: var(--primary-color);
}

#fileInput {
    display: none;
}

/* Code Response Area */
.response-block {
    background: #060913;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 1rem;
    font-family: "Courier New", Courier, monospace;
    font-size: 0.85rem;
    color: #34d399;
    max-height: 200px;
    overflow-y: auto;
    margin-top: 1rem;
    white-space: pre-wrap;
    word-break: break-all;
}

/* Task Layout */
.task-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 900px) {
    .task-layout {
        grid-template-columns: 1fr;
    }
}

.task-form-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.task-form-card h3 {
    margin-bottom: 1.25rem;
    font-size: 1.2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding-bottom: 0.5rem;
}

/* Tabs & Toggles */
.tabs-header {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 0.5rem;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 600;
    transition: color var(--transition-speed);
    position: relative;
}

.tab-btn.active {
    color: var(--text-primary);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -0.6rem;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: #1e293b;
    border-left: 4px solid var(--primary-color);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 300px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.toast.success {
    border-left-color: var(--secondary-color);
}

.toast.danger {
    border-left-color: var(--danger-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

/* Footer styling */
footer {
    border-top: 1px solid var(--card-border);
    padding: 2rem 1.5rem;
    background: rgba(11, 15, 25, 0.9);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: auto;
}

footer a {
    color: var(--text-primary);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Demo Mode Banner & Badge styling */
.demo-banner {
    background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.6rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 15px rgba(217, 119, 6, 0.25);
    z-index: 1000;
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.demo-banner-close {
    background: transparent;
    border: none;
    color: #ffffff;
    font-size: 1.1rem;
    cursor: pointer;
    font-weight: bold;
    opacity: 0.8;
    transition: opacity var(--transition-speed);
}

.demo-banner-close:hover {
    opacity: 1;
}

.demo-badge {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.4);
    color: #f59e0b;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    letter-spacing: 0.05em;
    vertical-align: middle;
    margin-left: 0.5rem;
    text-shadow: 0 0 8px rgba(245, 158, 11, 0.4);
}