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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    background: linear-gradient(160deg, var(--bg-gradient-1), var(--bg-gradient-2), var(--bg-gradient-3));
    color: var(--text-primary);
}

/* === LOGIN PAGE LAYOUT === */
.login-page {
    display: flex;
    justify-content: center;
    gap: 60px;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

/* Card suit watermarks */
.login-page .suit {
    position: absolute;
    opacity: 0.07;
    font-size: 70px;
    pointer-events: none;
    z-index: 0;
}
.login-page .suit.red { color: var(--suit-red); opacity: 0.09; }
.login-page .suit.white { color: var(--text-primary); opacity: 0.06; }

/* === LEFT PANEL: BRANDING === */
.brand-panel {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 50px 0;
    position: relative;
    z-index: 1;
}

.brand-name {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    line-height: 1.5;
}
.brand-name.gold { color: var(--accent); }
.brand-name.white { color: var(--text-primary); }

.brand-bar {
    width: 45px;
    height: 3px;
    background: var(--accent);
    margin: 16px 0;
    border-radius: 2px;
}

.brand-tagline {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* Card fan decoration */
.card-fan {
    margin-top: 32px;
    opacity: var(--card-fan-opacity);
}
.card-fan .card {
    display: inline-block;
    width: 40px;
    height: 56px;
    background: linear-gradient(135deg, #1e293b, #334155);
    border: 1px solid var(--card-fan-border);
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
.card-fan .card:nth-child(1) { transform: rotate(-15deg); }
.card-fan .card:nth-child(2) { transform: rotate(0deg); margin-left: -22px; }
.card-fan .card:nth-child(3) { transform: rotate(15deg); margin-left: -22px; }

/* === RIGHT PANEL: LOGIN FORM === */
.form-panel {
    width: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    position: relative;
    z-index: 1;
}

.form-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 40px;
    width: 100%;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.form-card h2 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 28px;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-group input {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    padding: 14px 16px;
    color: var(--input-text);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: var(--accent);
}

.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    border: none;
    border-radius: 8px;
    padding: 14px;
    color: #0a0a0a;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 2px;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.2);
    transition: transform 0.15s, box-shadow 0.15s;
    margin-top: 10px;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
}

.form-link {
    display: block;
    text-align: center;
    margin-top: 18px;
    color: var(--accent);
    font-size: 12px;
    opacity: 0.7;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    transition: opacity 0.2s;
}

.form-link:hover {
    opacity: 1;
}

/* Flash messages */
.flash-messages {
    margin-bottom: 20px;
}
.flash-messages .flash {
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 8px;
}
.flash.error {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.flash.success {
    background: rgba(34, 197, 94, 0.15);
    color: #86efac;
    border: 1px solid rgba(34, 197, 94, 0.2);
}
.flash.info {
    background: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Form validation errors */
.field-errors {
    list-style: none;
    padding: 0;
    margin: 4px 0 0 0;
}
.field-errors li {
    color: #fca5a5;
    font-size: 11px;
    margin-top: 4px;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .login-page {
        flex-direction: column;
        gap: 0;
    }

    .brand-panel {
        padding: 30px 24px 20px;
        align-items: center;
        text-align: center;
    }

    .brand-name {
        font-size: 20px;
    }

    .brand-bar {
        margin: 12px auto;
    }

    .brand-tagline {
        font-size: 13px;
    }

    .card-fan {
        display: none;
    }

    .form-panel {
        width: 100%;
        padding: 20px 24px 40px;
    }
}