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

:root {
    --primary: #6c5ce7;
    --primary-dark: #5b4cdb;
    --secondary: #00cec9;
    --success: #00b894;
    --warning: #fdcb6e;
    --danger: #e74c3c;
    --dark: #1a1a2e;
    --dark-light: #16213e;
    --dark-lighter: #0f3460;
    --text: #ffffff;
    --text-muted: #b2bec3;
    --border: rgba(255, 255, 255, 0.1);
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--dark);
    color: var(--text);
    overflow-x: hidden;
}

#app {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    font-size: 1.5rem;
    color: var(--text-muted);
}

/* Typography */
h1 { font-size: 2rem; font-weight: 700; margin-bottom: 1rem; }
h2 { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.75rem; }
h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
p { line-height: 1.6; }

/* Containers */
.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: 1rem;
}

.page {
    min-height: 100vh;
    padding: 1rem;
}

/* Cards */
.card {
    background: var(--dark-light);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--dark-lighter);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: var(--dark-light);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover:not(:disabled) {
    filter: brightness(1.1);
}

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

.btn-danger:hover:not(:disabled) {
    filter: brightness(1.1);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--primary);
    color: white;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-muted);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    background: var(--dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    transition: border-color 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* PIN input */
.pin-input {
    font-size: 2rem;
    text-align: center;
    letter-spacing: 0.5rem;
    font-family: monospace;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 20px;
}

.badge-primary { background: var(--primary); color: white; }
.badge-success { background: var(--success); color: white; }
.badge-warning { background: var(--warning); color: var(--dark); }
.badge-danger { background: var(--danger); color: white; }
.badge-muted { background: var(--dark-lighter); color: var(--text-muted); }

/* Utilities */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.hidden { display: none !important; }

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

.slide-up {
    animation: slideUp 0.3s ease;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark);
}

::-webkit-scrollbar-thumb {
    background: var(--dark-lighter);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}