:root {
    --bg-color: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow-x: hidden;
}

/* Background Blobs for Visual Aesthetics */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    filter: blur(100px);
    opacity: 0.6;
}

.blob {
    position: absolute;
    border-radius: 50%;
    animation: float 20s infinite alternate ease-in-out;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: #3b82f6;
    top: -10%;
    right: -10%;
    animation-delay: 0s;
}

.blob-2 {
    width: 600px;
    height: 600px;
    background: #8b5cf6;
    bottom: -20%;
    left: -10%;
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-50px, 50px) scale(1.1); }
}

.container {
    width: 100%;
    max-width: 1200px;
    padding: 3rem 2rem;
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 4rem;
}

header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.05em;
}

header h1 span {
    background: linear-gradient(135deg, #3b82f6, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 1.5rem;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    box-shadow: var(--glass-shadow);
}

.card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.75rem;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.card-content h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.card-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

@media (max-width: 768px) {
    header h1 { font-size: 2.5rem; }
    .grid { grid-template-columns: 1fr; }
}

/* ── Login page ──────────────────────────────────────────────────────── */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    width: 100%;
    padding: 2rem;
    z-index: 1;
}

.login-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 1.5rem;
    padding: 3rem;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--glass-shadow);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
}

.login-header h1 span {
    background: linear-gradient(135deg, #3b82f6, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.input-group {
    margin-bottom: 1.25rem;
}

.input-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
    font-weight: 600;
}

.input-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    border: 1px solid var(--glass-border);
    background: rgba(15, 23, 42, 0.6);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.remember-group {
    margin-bottom: 1.25rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.remember-group input[type="checkbox"] {
    margin-right: 0.4rem;
    accent-color: #3b82f6;
}

.login-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    padding: 0.7rem 1rem;
    border-radius: 0.75rem;
    font-size: 0.85rem;
    margin-bottom: 1rem;
    text-align: center;
}

.login-btn {
    width: 100%;
    padding: 0.85rem;
    border-radius: 0.75rem;
    border: none;
    background: linear-gradient(135deg, #3b82f6, #a855f7);
    color: white;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.15s;
}

.login-btn:hover { opacity: 0.9; transform: translateY(-1px); }
.login-btn:active { transform: translateY(0); }
.login-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ── Logout button ───────────────────────────────────────────────────── */
.logout-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(255,255,255,0.08);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
    font-family: 'Inter', sans-serif;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    z-index: 10;
}
.logout-btn:hover { background: rgba(239,68,68,0.2); color: #fca5a5; border-color: rgba(239,68,68,0.3); }