/* ============================================
   Türöffner - Modernes Dark Theme
   ============================================ */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #16161f;
    --bg-input: #1e1e2a;
    
    --accent-primary: #00d4aa;
    --accent-secondary: #00b894;
    --accent-glow: rgba(0, 212, 170, 0.4);
    
    --error-color: #ff6b6b;
    --error-glow: rgba(255, 107, 107, 0.3);
    
    --warning-color: #ffd93d;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-accent: rgba(0, 212, 170, 0.3);
    
    --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    --shadow-glow: 0 0 60px var(--accent-glow);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html, body {
    height: 100%;
}

body {
    font-family: var(--font-display);
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Background Effects */
.background-effects {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s infinite ease-in-out;
}

.glow-1 {
    width: 400px;
    height: 400px;
    background: var(--accent-primary);
    top: -200px;
    right: -100px;
    opacity: 0.15;
}

.glow-2 {
    width: 300px;
    height: 300px;
    background: #6366f1;
    bottom: -150px;
    left: -100px;
    opacity: 0.1;
    animation-delay: -10s;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

/* Container */
.container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 3%;
    width: 100%;
    position: relative;
    z-index: 1;
}

/* Views */
.view {
    display: none;
    animation: fadeIn 0.4s ease;
    width: 100%;
    max-width: 420px;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(20px) scale(0.95);
    }
    to { 
        opacity: 1; 
        transform: translateY(0) scale(1);
    }
}

/* Card */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 6% 5%;
    width: 100%;
    box-shadow: var(--shadow-card);
    text-align: center;
    backdrop-filter: blur(20px);
}

.card.shake {
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-10px); }
    40% { transform: translateX(10px); }
    60% { transform: translateX(-10px); }
    80% { transform: translateX(10px); }
}

/* Icon Wrapper */
.icon-wrapper {
    width: clamp(56px, 15vw, 80px);
    height: clamp(56px, 15vw, 80px);
    margin: 0 auto 4%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-input);
    border-radius: 50%;
    border: 1px solid var(--border-color);
}

.icon-wrapper svg {
    width: clamp(24px, 7vw, 36px);
    height: clamp(24px, 7vw, 36px);
    color: var(--text-secondary);
}

.icon-wrapper.success {
    background: rgba(0, 212, 170, 0.1);
    border-color: var(--border-accent);
}

.icon-wrapper.success svg {
    color: var(--accent-primary);
}

.icon-wrapper.error {
    background: rgba(255, 107, 107, 0.1);
    border-color: rgba(255, 107, 107, 0.3);
}

.icon-wrapper.error svg {
    color: var(--error-color);
}

/* Typography */
h1 {
    font-size: clamp(20px, 5vw, 28px);
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 2%;
}

.subtitle {
    color: var(--text-secondary);
    font-size: clamp(13px, 3.5vw, 15px);
    font-weight: 400;
    margin-bottom: 5%;
}

/* PIN Display */
.pin-display {
    position: relative;
    margin-bottom: 4%;
}

.pin-dots {
    display: flex;
    gap: 3%;
    justify-content: center;
    padding: 3% 0;
}

.dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    transition: all var(--transition-fast);
}

.dot.filled {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 12px var(--accent-glow);
}

#pin-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    font-size: 24px;
}

/* Keypad */
.keypad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3%;
    margin-bottom: 5%;
}

.key {
    aspect-ratio: 1;
    border: none;
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: clamp(20px, 5vw, 28px);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
}

.key:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
}

.key:active {
    transform: scale(0.95);
    background: rgba(255, 255, 255, 0.12);
}

.key svg {
    width: 24px;
    height: 24px;
}

.key-clear {
    color: var(--error-color);
}

.key-clear:hover {
    background: rgba(255, 107, 107, 0.1);
    border-color: rgba(255, 107, 107, 0.3);
}

.key-submit {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

.key-submit:hover {
    background: var(--accent-secondary);
    border-color: var(--accent-secondary);
}

/* Door Button */
.door-button {
    width: 100%;
    padding: 20px 32px;
    border: none;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--bg-primary);
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 24px var(--accent-glow);
    margin-bottom: 16px;
}

.door-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px var(--accent-glow);
}

.door-button:active:not(:disabled) {
    transform: translateY(0);
}

.door-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.door-button .btn-icon svg {
    width: 24px;
    height: 24px;
    transition: transform var(--transition-normal);
}

.door-button:hover:not(:disabled) .btn-icon svg {
    transform: translateX(4px);
}

.door-button.loading {
    pointer-events: none;
}

.door-button.loading .btn-text::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-left: 8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.door-button.success {
    background: linear-gradient(135deg, #10b981, #059669);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Logout Button */
.logout-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: 8px;
}

.logout-button:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.15);
}

.logout-button svg {
    width: 18px;
    height: 18px;
}

/* Messages */
.message {
    min-height: 24px;
    font-size: 14px;
    padding: 8px 0;
    transition: all var(--transition-fast);
}

.message.error {
    color: var(--error-color);
}

.message.success {
    color: var(--accent-primary);
}

.message.loading {
    color: var(--text-secondary);
}

/* Blocked View */
.countdown {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    margin: 24px 0;
}

#countdown-timer {
    font-family: var(--font-mono);
    font-size: 36px;
    font-weight: 600;
    color: var(--error-color);
    letter-spacing: 2px;
}

.blocked-info {
    color: var(--text-muted);
    font-size: 14px;
}

/* Touch Feedback für Mobile */
@media (hover: none) {
    .key:active {
        background: rgba(255, 255, 255, 0.15);
    }
    
    .door-button:active:not(:disabled) {
        transform: scale(0.98);
    }
}

/* Safe Area für Notch-Geräte */
@supports (padding: max(0px)) {
    .container {
        padding-left: max(3%, env(safe-area-inset-left));
        padding-right: max(3%, env(safe-area-inset-right));
        padding-bottom: max(3%, env(safe-area-inset-bottom));
    }
}