/**
 * Chess Clock Styles
 * 
 * Dedicated styles for chess clock tool
 * Large, readable displays with touch-friendly controls
 * 
 * @package ChessTimerDigital
 * @version 1.0.0
 */

/* ============================================
   CHESS CLOCK CONTAINER
   ============================================ */

.chess-clock-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-xl) 0;
}

.chess-clock-container {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
}

@media (max-width: 768px) {
    .chess-clock-container {
        padding: var(--spacing-lg);
    }
}

/* ============================================
   FULLSCREEN MODE STYLES
   ============================================ */

/* Fullscreen container - maximize viewport */
.chess-clock-container:fullscreen,
.chess-clock-container:-webkit-full-screen,
.chess-clock-container:-moz-full-screen,
.chess-clock-container:-ms-fullscreen {
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    margin: 0;
    padding: 0;
    border: none;
    border-radius: 0;
    background: #1a1a1a;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* Body in fullscreen mode */
body:fullscreen,
body:-webkit-full-screen,
body:-moz-full-screen,
body:-ms-fullscreen {
    background: #1a1a1a;
    overflow: hidden;
}

/* Fullscreen class for JavaScript control */
.fullscreen-mode {
    width: 100vw !important;
    height: 100vh !important;
    max-width: 100vw !important;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    border-radius: 0 !important;
    background: #1a1a1a !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    align-items: center !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    z-index: 9998 !important;
}

/* Hide non-essential elements in fullscreen */
.chess-clock-container:fullscreen .clock-presets,
.chess-clock-container:fullscreen .clock-settings,
.chess-clock-container:fullscreen .clock-controls,
.chess-clock-container:fullscreen .keyboard-shortcuts,
.chess-clock-container:-webkit-full-screen .clock-presets,
.chess-clock-container:-webkit-full-screen .clock-settings,
.chess-clock-container:-webkit-full-screen .clock-controls,
.chess-clock-container:-webkit-full-screen .keyboard-shortcuts,
.fullscreen-mode .clock-presets,
.fullscreen-mode .clock-settings,
.fullscreen-mode .clock-controls,
.fullscreen-mode .keyboard-shortcuts {
    display: none !important;
}

/* Maximize clock displays in fullscreen */
.chess-clock-container:fullscreen .clock-displays,
.chess-clock-container:-webkit-full-screen .clock-displays,
.fullscreen-mode .clock-displays {
    width: 100%;
    height: 100vh;
    max-width: 100vw;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    margin: 0;
}

/* Individual clock display in fullscreen */
.chess-clock-container:fullscreen .clock-display,
.chess-clock-container:-webkit-full-screen .clock-display,
.fullscreen-mode .clock-display {
    height: 100vh;
    border-radius: 0;
    border: none;
    border-right: 2px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: #2a2a2a;
    transition: all 0.3s ease;
}

.chess-clock-container:fullscreen .clock-display:last-child,
.chess-clock-container:-webkit-full-screen .clock-display:last-child,
.fullscreen-mode .clock-display:last-child {
    border-right: none;
    border-left: 2px solid rgba(255, 255, 255, 0.1);
}

/* Active clock in fullscreen - enhanced prominence */
.chess-clock-container:fullscreen .clock-display.active,
.chess-clock-container:-webkit-full-screen .clock-display.active,
.fullscreen-mode .clock-display.active {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    border-color: transparent;
    box-shadow: inset 0 0 100px rgba(0, 0, 0, 0.3);
    transform: scale(1.02);
}

/* Inactive clock in fullscreen - subdued */
.chess-clock-container:fullscreen .clock-display:not(.active),
.chess-clock-container:-webkit-full-screen .clock-display:not(.active),
.fullscreen-mode .clock-display:not(.active) {
    background: #1a1a1a;
    opacity: 0.6;
    transform: scale(0.98);
}

/* Timeout state in fullscreen */
.chess-clock-container:fullscreen .clock-display.timeout,
.chess-clock-container:-webkit-full-screen .clock-display.timeout,
.fullscreen-mode .clock-display.timeout {
    background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
    animation: pulseFullscreen 1s infinite;
}

@keyframes pulseFullscreen {
    0%, 100% { 
        opacity: 1;
        transform: scale(1);
    }
    50% { 
        opacity: 0.85;
        transform: scale(1.01);
    }
}

/* Clock time in fullscreen - maximize size */
.chess-clock-container:fullscreen .clock-time,
.chess-clock-container:-webkit-full-screen .clock-time,
.fullscreen-mode .clock-time {
    font-size: clamp(8rem, 20vw, 24rem);
    letter-spacing: -0.05em;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    color: #ffffff;
    font-weight: 900;
}

/* Clock label in fullscreen */
.chess-clock-container:fullscreen .clock-label,
.chess-clock-container:-webkit-full-screen .clock-label,
.fullscreen-mode .clock-label {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
    letter-spacing: 0.2em;
}

/* Clock status in fullscreen */
.chess-clock-container:fullscreen .clock-status,
.chess-clock-container:-webkit-full-screen .clock-status,
.fullscreen-mode .clock-status {
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: rgba(255, 255, 255, 0.6);
    margin-top: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

/* ============================================
   FLOATING CONTROLS (Fullscreen Only)
   ============================================ */

.fullscreen-controls {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 60px;
    padding: 20px 30px;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    display: flex;
    gap: 20px;
    align-items: center;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Show floating controls in fullscreen */
.chess-clock-container:fullscreen .fullscreen-controls,
.chess-clock-container:-webkit-full-screen .fullscreen-controls,
.fullscreen-mode .fullscreen-controls,
body:fullscreen .fullscreen-controls,
body:-webkit-full-screen .fullscreen-controls {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
}

/* Hover effect for floating controls */
.fullscreen-controls:hover {
    background: rgba(0, 0, 0, 0.95);
    transform: translate(-50%, -50%) scale(1.05);
    box-shadow: 
        0 25px 80px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* Floating control buttons */
.fullscreen-controls .control-button {
    width: 56px;
    height: 56px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.fullscreen-controls .control-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.fullscreen-controls .control-button:hover::before {
    width: 100%;
    height: 100%;
}

.fullscreen-controls .control-button:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.15) translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.fullscreen-controls .control-button:active {
    transform: scale(0.95);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Specific button colors */
.fullscreen-controls .btn-play-pause {
    background: rgba(37, 99, 235, 0.3);
}

.fullscreen-controls .btn-play-pause:hover {
    background: rgba(37, 99, 235, 0.5);
}

.fullscreen-controls .btn-reset {
    background: rgba(251, 146, 60, 0.3);
}

.fullscreen-controls .btn-reset:hover {
    background: rgba(251, 146, 60, 0.5);
}

.fullscreen-controls .btn-fullscreen {
    background: rgba(168, 85, 247, 0.3);
}

.fullscreen-controls .btn-fullscreen:hover {
    background: rgba(168, 85, 247, 0.5);
}

.fullscreen-controls .btn-exit {
    background: rgba(239, 68, 68, 0.3);
}

.fullscreen-controls .btn-exit:hover {
    background: rgba(239, 68, 68, 0.5);
}

/* Icon sizing in floating controls */
.fullscreen-controls .control-button svg {
    width: 24px;
    height: 24px;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

/* Separator between buttons */
.fullscreen-controls .separator {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    margin: 0 5px;
}

/* ============================================
   TIME DISPLAY
   ============================================ */

.clock-displays {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

@media (max-width: 768px) {
    .clock-displays {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

.clock-display {
    background: var(--bg-primary);
    border: 3px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    position: relative;
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
}

.clock-display:hover {
    border-color: var(--primary-color);
}

.clock-display.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.clock-display.active .clock-time {
    color: white;
}

.clock-display.active .clock-label {
    color: rgba(255, 255, 255, 0.9);
}

.clock-display.timeout {
    background: var(--error-color);
    border-color: var(--error-color);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.clock-display.timeout .clock-time {
    color: white;
}

.clock-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.clock-time {
    font-size: 4.5rem;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -2px;
}

@media (max-width: 768px) {
    .clock-time {
        font-size: 3.5rem;
    }
}

@media (max-width: 480px) {
    .clock-time {
        font-size: 2.5rem;
    }
}

.clock-status {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

/* ============================================
   PRESETS
   ============================================ */

.clock-presets {
    margin-bottom: var(--spacing-xl);
}

.presets-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: block;
}

.presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.preset-btn {
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

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

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

.preset-name {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: var(--spacing-xs);
}

.preset-time {
    display: block;
    font-size: 1.125rem;
    font-weight: 800;
    font-family: var(--font-mono);
}

/* ============================================
   CONTROLS
   ============================================ */

.clock-controls {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.control-btn {
    min-width: 120px;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.control-btn svg {
    width: 20px;
    height: 20px;
}

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

.btn-start:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-pause:hover {
    background: #d97706;
    transform: translateY(-2px);
}

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

.btn-reset:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

.btn-settings {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

/* ============================================
   SETTINGS PANEL
   ============================================ */

.clock-settings {
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.settings-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.settings-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.settings-group {
    display: flex;
    flex-direction: column;
}

.settings-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.settings-input {
    padding: var(--spacing-md);
    font-size: 1rem;
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.settings-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Mode Selector */
.mode-selector {
    display: flex;
    gap: var(--spacing-sm);
    background: var(--bg-secondary);
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
}

.mode-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

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

.mode-btn:hover:not(.active) {
    background: var(--bg-tertiary);
}

/* ============================================
   TOGGLE SWITCHES
   ============================================ */

.toggle-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.toggle-label {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toggle-switch {
    position: relative;
    width: 52px;
    height: 28px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    transition: var(--transition-fast);
    border-radius: var(--radius-full);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 2px;
    bottom: 2px;
    background: white;
    transition: var(--transition-fast);
    border-radius: 50%;
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

/* ============================================
   KEYBOARD SHORTCUTS INFO
   ============================================ */

.keyboard-shortcuts {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.shortcuts-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
}

.shortcuts-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.shortcut-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
}

.shortcut-key {
    background: var(--bg-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.75rem;
    min-width: 32px;
    text-align: center;
}

.shortcut-desc {
    color: var(--text-secondary);
}

/* ============================================
   MOBILE FULLSCREEN ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
    .chess-clock-container:fullscreen .clock-displays,
    .chess-clock-container:-webkit-full-screen .clock-displays,
    .fullscreen-mode .clock-displays {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 1fr;
    }
    
    .chess-clock-container:fullscreen .clock-display,
    .chess-clock-container:-webkit-full-screen .clock-display,
    .fullscreen-mode .clock-display {
        height: 50vh;
        border-right: none;
        border-left: none;
        border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    }
    
    .chess-clock-container:fullscreen .clock-display:last-child,
    .chess-clock-container:-webkit-full-screen .clock-display:last-child,
    .fullscreen-mode .clock-display:last-child {
        border-bottom: none;
        border-top: 2px solid rgba(255, 255, 255, 0.1);
    }
    
    .chess-clock-container:fullscreen .clock-time,
    .chess-clock-container:-webkit-full-screen .clock-time,
    .fullscreen-mode .clock-time {
        font-size: clamp(6rem, 15vw, 12rem);
    }
    
    .fullscreen-controls {
        bottom: 20px;
        top: auto;
        transform: translateX(-50%);
        left: 50%;
        padding: 15px 20px;
        border-radius: 50px;
    }
    
    .fullscreen-controls .control-button {
        width: 48px;
        height: 48px;
    }
    
    .fullscreen-controls .control-button svg {
        width: 20px;
        height: 20px;
    }
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 768px) {
    .chess-clock-container {
        border-radius: var(--radius-md);
    }
    
    .clock-display {
        padding: var(--spacing-xl);
    }
    
    .clock-controls {
        flex-direction: column;
    }
    
    .control-btn {
        width: 100%;
        min-width: auto;
    }
    
    .presets-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .settings-row {
        grid-template-columns: 1fr;
    }
    
    .keyboard-shortcuts {
        display: none;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

.chess-clock-container {
    animation: fadeIn 0.5s ease-out;
}

/* Tick animation for active clock */
.clock-display.active .clock-time {
    animation: tickPulse 1s ease-in-out infinite;
}

@keyframes tickPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

/* Smooth transition to fullscreen */
.chess-clock-container {
    transition: all 0.3s ease;
}

/* Glow effect for active clock in fullscreen */
.chess-clock-container:fullscreen .clock-display.active,
.chess-clock-container:-webkit-full-screen .clock-display.active,
.fullscreen-mode .clock-display.active {
    box-shadow: 
        inset 0 0 100px rgba(0, 0, 0, 0.3),
        0 0 80px rgba(37, 99, 235, 0.4);
}

/* ============================================
   ACCESSIBILITY - Focus States
   ============================================ */

.fullscreen-controls .control-button:focus-visible {
    outline: 3px solid rgba(255, 255, 255, 0.5);
    outline-offset: 4px;
}

.clock-display:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 4px;
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .clock-controls,
    .clock-settings,
    .keyboard-shortcuts,
    .fullscreen-controls {
        display: none;
    }
    
    .chess-clock-container {
        border: 2px solid #000;
        box-shadow: none;
    }
}