/**
 * Virtual Candles - Frontend Styles
 * MOBILE FIRST Design
 */

/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */

:root {
    /* Colors - Primary */
    --vc-color-primary: #ff6b35;
    --vc-color-primary-end: #f7931e;
    --vc-color-primary-rgb: 255, 107, 53;

    /* Colors - Accent */
    --vc-color-accent: #ffd60a;
    --vc-color-accent-rgb: 255, 214, 10;

    /* Colors - Success */
    --vc-color-success: #22c55e;
    --vc-color-success-light: #4ade80;
    --vc-color-success-rgb: 74, 222, 128;

    /* Colors - Error */
    --vc-color-error-bg: #f8d7da;
    --vc-color-error-text: #721c24;
    --vc-color-error-border: #f5c6cb;

    /* Colors - Text */
    --vc-color-text: #1a1a1a;
    --vc-color-text-secondary: #333;
    --vc-color-text-muted: #666;

    /* Colors - Backgrounds */
    --vc-color-bg: white;
    --vc-color-bg-secondary: #f5f5f5;
    --vc-color-bg-hover: #e0e0e0;
    --vc-color-bg-canvas-start: #0a0a14;
    --vc-color-bg-canvas-end: #151520;
    --vc-color-overlay: rgba(0, 0, 0, 0.8);

    /* Colors - Border */
    --vc-color-border: #e0e0e0;

    /* Border Radius */
    --vc-radius-sm: 8px;
    --vc-radius-md: 12px;
    --vc-radius-lg: 16px;
    --vc-radius-pill: 9999px;
    --vc-radius-circle: 50%;

    /* Spacing */
    --vc-space-xs: 4px;
    --vc-space-sm: 8px;
    --vc-space-md: 12px;
    --vc-space-lg: 16px;
    --vc-space-xl: 20px;
    --vc-space-2xl: 32px;

    /* Font Sizes */
    --vc-font-xs: clamp(0.6875rem, 1.6vw, 0.75rem);
    --vc-font-sm: clamp(0.75rem, 1.8vw, 0.875rem);
    --vc-font-md: clamp(0.875rem, 2vw, 1rem);
    --vc-font-base: clamp(1rem, 2.2vw, 1.125rem);
    --vc-font-lg: clamp(1.125rem, 2.5vw, 1.25rem);
    --vc-font-xl: clamp(1.25rem, 3vw, 1.5rem);
    --vc-font-2xl: clamp(1.5rem, 3.5vw, 1.875rem);
    --vc-font-3xl: clamp(1.75rem, 4vw, 2.125rem);
    --vc-font-4xl: clamp(2rem, 4.5vw, 2.5rem);
    --vc-font-5xl: clamp(2.5rem, 6vw, 3.25rem);

    /* Canvas Height (overridden per breakpoint) */
    --vc-canvas-height: 65vh;
    --vc-canvas-height: 65dvh;

    /* Transitions */
    --vc-transition-fast: 0.2s ease;
    --vc-transition-normal: 0.3s ease;

    /* Touch */
    --vc-touch-target: 48px;
}

/* ==========================================================================
   Container & Canvas
   ========================================================================== */

.virtual-candles-container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
}

#candle-canvas-container {
    position: relative;
    width: 100%;
    height: var(--vc-canvas-height);
    min-height: 400px;
    max-height: 900px;
    background: linear-gradient(180deg, var(--vc-color-bg-canvas-start) 0%, var(--vc-color-bg-canvas-end) 100%);
    border-radius: 0;
    overflow: hidden;
    box-shadow: none;
}

@media (min-width: 768px) {
    #candle-canvas-container {
        border-radius: var(--vc-radius-md);
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    }
}

#candle-canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: pan-y;
}

/* Candle Counter (floating oben zentriert) */
.candle-counter {
    position: absolute;
    top: var(--vc-space-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 50;

    display: flex;
    align-items: baseline;
    gap: 6px;

    white-space: nowrap;
    text-shadow: 0 0 30px rgba(var(--vc-color-primary-rgb), 0.5),
                 0 0 60px rgba(var(--vc-color-primary-rgb), 0.2),
                 0 2px 8px rgba(0, 0, 0, 0.6);

    opacity: 0;
    transition: opacity 0.8s ease;
}

.candle-counter.visible {
    opacity: 1;
}

.counter-number,
.counter-label {
    font-size: clamp(1.25rem, 5vw, 2.5rem);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.15);
}

.counter-number {
    font-variant-numeric: tabular-nums;
}

/* Tooltip für Hover auf Kerzen */
.candle-tooltip {
    position: absolute;
    pointer-events: none;
    z-index: 1000;
    animation: tooltipFadeIn var(--vc-transition-fast);
}

@keyframes tooltipFadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tooltip-inner {
    background: rgba(0, 0, 0, 0.9);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--vc-radius-md);
    padding: 10px var(--vc-space-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    transform: translateX(-50%);
    white-space: nowrap;
}

.tooltip-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 2px;
}

.tooltip-text strong {
    color: var(--vc-color-primary);
    font-size: var(--vc-font-md);
    font-weight: 600;
    text-transform: capitalize;
}

.tooltip-date {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--vc-font-xs);
}

.tooltip-inner::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: var(--arrow-offset, 50%);
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid rgba(0, 0, 0, 0.9);
}

/* Loading Spinner */
.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--vc-color-accent);
    z-index: 10;
}

.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto 15px;
    border: 4px solid rgba(var(--vc-color-accent-rgb), 0.2);
    border-top-color: var(--vc-color-accent);
    border-radius: var(--vc-radius-circle);
    animation: spin 1s linear infinite;
}

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

.loading-spinner p {
    font-size: var(--vc-font-md);
    margin: 0;
}

/* ==========================================================================
   Button (Floating über Canvas)
   ========================================================================== */

.light-candle-button {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;

    background: linear-gradient(135deg, var(--vc-color-primary) 0%, var(--vc-color-primary-end) 100%);
    color: white;
    border: none;
    border-radius: var(--vc-radius-pill);

    padding: var(--vc-space-lg) var(--vc-space-2xl);
    font-size: var(--vc-font-base);
    font-weight: 600;
    white-space: nowrap;

    cursor: pointer;
    transition: transform var(--vc-transition-normal), box-shadow var(--vc-transition-normal), filter var(--vc-transition-normal);
    box-shadow: 0 8px 25px rgba(var(--vc-color-primary-rgb), 0.5);

    min-height: var(--vc-touch-target);
    -webkit-appearance: none;
    appearance: none;
    -webkit-tap-highlight-color: transparent;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);

    animation: buttonPulse 3s ease-in-out infinite;
}

.light-candle-button:hover {
    transform: translateX(-50%) translateY(-3px);
    box-shadow: 0 12px 30px rgba(var(--vc-color-primary-rgb), 0.6);
}

.light-candle-button:active {
    transform: translateX(-50%) translateY(-1px);
}

.candle-icon {
    font-size: 24px;
    line-height: 1;
}

img.emoji {
    height: 1em;
    width: 1em;
    vertical-align: -0.1em;
}

@keyframes buttonPulse {
    0%, 100% {
        transform: translateX(-50%) scale(1);
        box-shadow: 0 6px 20px rgba(var(--vc-color-primary-rgb), 0.4);
        filter: brightness(1);
    }
    30% {
        transform: translateX(-50%) scale(1.04);
        box-shadow: 0 8px 35px rgba(var(--vc-color-primary-rgb), 0.7);
        filter: brightness(1.1);
    }
    60% {
        transform: translateX(-50%) scale(1.01);
        box-shadow: 0 6px 25px rgba(var(--vc-color-primary-rgb), 0.5);
        filter: brightness(1.02);
    }
    80% {
        transform: translateX(-50%) scale(1.03);
        box-shadow: 0 10px 40px rgba(var(--vc-color-primary-rgb), 0.65);
        filter: brightness(1.08);
    }
}

/* ==========================================================================
   Modal
   ========================================================================== */

.candle-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--vc-color-overlay);
    z-index: 9999;

    align-items: center;
    justify-content: center;

    padding: env(safe-area-inset-top, var(--vc-space-xl))
             env(safe-area-inset-right, 15px)
             env(safe-area-inset-bottom, var(--vc-space-xl))
             env(safe-area-inset-left, 15px);

    opacity: 0;
    transition: opacity var(--vc-transition-normal);

    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.candle-modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--vc-color-bg);
    border-radius: var(--vc-radius-lg);
    padding: var(--vc-space-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    max-height: 90dvh;
    overflow-y: auto;
    position: relative;
    margin: var(--vc-space-lg);

    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: slideUp var(--vc-transition-normal);
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: var(--vc-space-lg);
    right: var(--vc-space-lg);

    background: transparent;
    border: none;
    font-size: 32px;
    color: var(--vc-color-text-muted);
    cursor: pointer;

    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: var(--vc-radius-circle);
    transition: all var(--vc-transition-fast);

    -webkit-tap-highlight-color: transparent;
}

.modal-close:hover {
    background: var(--vc-color-bg-secondary);
    color: var(--vc-color-text-secondary);
}

.modal-content h2 {
    margin: 0 0 var(--vc-space-xl) 0;
    font-size: var(--vc-font-xl);
    color: var(--vc-color-text);
    padding-right: 40px;
}

/* ==========================================================================
   Form
   ========================================================================== */

#candle-form {
    transition: opacity var(--vc-transition-normal), transform var(--vc-transition-normal);
    opacity: 1;
    transform: scale(1);
    display: block;
}

.form-group {
    margin-bottom: var(--vc-space-lg);
}

.form-group:last-of-type {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: var(--vc-space-sm);
    font-weight: 600;
    color: var(--vc-color-text-secondary);
    font-size: var(--vc-font-md);
}

.form-group input[type="text"],
.form-group textarea,
.form-group select {
    width: 100%;
    box-sizing: border-box;
    padding: var(--vc-space-md);
    border: 2px solid var(--vc-color-border);
    border-radius: var(--vc-radius-sm);
    font-size: var(--vc-font-base);
    font-family: inherit;
    color: var(--vc-color-text);
    background: var(--vc-color-bg);
    transition: border-color var(--vc-transition-fast);

    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.form-group input[type="text"]:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--vc-color-primary);
    box-shadow: 0 0 0 3px rgba(var(--vc-color-primary-rgb), 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
    max-height: 200px;
}

.char-counter {
    display: block;
    text-align: right;
    font-size: var(--vc-font-sm);
    color: var(--vc-color-text-muted);
    margin-top: var(--vc-space-xs);
}

/* Select Styling */
.form-group select {
    background: var(--vc-color-bg);
    background-image: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12" viewBox="0 0 12 12"><path fill="%23666" d="M6 9L1 4h10z"/></svg>');
    background-repeat: no-repeat;
    background-position: right var(--vc-space-md) center;
    padding-right: 36px;
    cursor: pointer;
}

/* ==========================================================================
   Form Actions & Buttons
   ========================================================================== */

.form-actions {
    display: flex;
    gap: var(--vc-space-md);
    margin-top: var(--vc-space-xl);
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    flex: 1;
    min-width: 120px;

    padding: var(--vc-space-md) 24px;
    border: none;
    border-radius: var(--vc-radius-pill);
    font-size: var(--vc-font-sm);
    font-weight: 600;
    cursor: pointer;

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--vc-space-sm);

    transition: transform var(--vc-transition-fast), box-shadow var(--vc-transition-fast);

    min-height: var(--vc-touch-target);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    -webkit-tap-highlight-color: transparent;
}

button.btn-primary,
input.btn-primary,
.btn-primary {
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    background: #ff6b35 !important;
    color: white !important;
    border: none !important;
    border-radius: 9999px !important;
    opacity: 1 !important;
    text-transform: none !important;
    text-align: center !important;
    justify-content: center !important;
    align-items: center !important;
    line-height: 1.2 !important;
    box-shadow: 0 4px 12px rgba(var(--vc-color-primary-rgb), 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(var(--vc-color-primary-rgb), 0.4);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-secondary {
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    background: var(--vc-color-bg-secondary) !important;
    color: var(--vc-color-text-secondary) !important;
    border: none !important;
    border-radius: 9999px !important;
    opacity: 1 !important;
    text-transform: none !important;
    text-align: center !important;
    line-height: 1.2 !important;
}

.btn-secondary:hover {
    background: var(--vc-color-bg-hover) !important;
}

.btn-icon {
    font-size: var(--vc-font-lg);
}

/* ==========================================================================
   Form Messages & Success Screen
   ========================================================================== */

.form-message {
    margin-top: var(--vc-space-md);
    padding: 10px var(--vc-space-md);
    border-radius: var(--vc-radius-sm);
    font-size: var(--vc-font-md);
    font-weight: 500;
    text-align: center;
    transition: all var(--vc-transition-normal);
}

.form-message:empty {
    display: none;
}

.form-message.error {
    background: var(--vc-color-error-bg);
    color: var(--vc-color-error-text);
    border: 1px solid var(--vc-color-error-border);
}

/* Success Screen */
.success-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 40px var(--vc-space-xl) 30px;
}

/* Voxel Candle (matches Three.js candle proportions) */
.success-candle {
    --sc-px: 5px;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 24px;
    filter: drop-shadow(0 0 20px rgba(255, 140, 0, 0.4));
}

.success-wax {
    width: calc(var(--sc-px) * 6);
    height: calc(var(--sc-px) * 16);
    background: #f5e6c8;
    box-shadow: inset calc(var(--sc-px) * -2) 0 0 #e8d5a8;
}

.success-wick {
    width: calc(var(--sc-px) * 1);
    height: calc(var(--sc-px) * 2);
    background: #3a3a3a;
}

.success-flame {
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: successFlameFlicker 0.35s steps(2) infinite alternate;
}

.sf-tip {
    width: calc(var(--sc-px) * 1);
    height: calc(var(--sc-px) * 1.5);
    background: #fff3a0;
}

.sf-top {
    width: calc(var(--sc-px) * 1.5);
    height: calc(var(--sc-px) * 2);
    background: #ffd60a;
}

.sf-mid {
    width: calc(var(--sc-px) * 2);
    height: calc(var(--sc-px) * 3);
    background: #ff8c00;
}

.sf-base {
    width: calc(var(--sc-px) * 2.5);
    height: calc(var(--sc-px) * 3);
    background: #ff6b00;
}

@keyframes successFlameFlicker {
    0% {
        transform: scaleY(1) scaleX(1);
    }
    100% {
        transform: scaleY(0.85) scaleX(1.15);
    }
}

.success-text-primary {
    font-size: var(--vc-font-xl);
    font-weight: 700;
    color: var(--vc-color-text);
    margin: 0 0 var(--vc-space-sm) 0;
    animation: successFadeIn 0.5s ease-out 0.2s both;
}

.success-text-secondary {
    font-size: var(--vc-font-base);
    color: var(--vc-color-text-muted);
    margin: 0 0 var(--vc-space-xl) 0;
    animation: successFadeIn 0.5s ease-out 0.35s both;
}

.success-text-count {
    font-size: var(--vc-font-base);
    font-weight: 600;
    color: var(--vc-color-primary);
    margin: 0;
    animation: successFadeIn 0.5s ease-out 0.5s both;
}

@keyframes successFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Tablet Responsive (768px+)
   ========================================================================== */

@media (min-width: 768px) {
    :root {
        --vc-canvas-height: 550px;
    }

    .modal-content {
        padding: var(--vc-space-2xl);
    }

    .modal-content h2 {
        font-size: var(--vc-font-3xl);
    }

    .light-candle-button {
        font-size: var(--vc-font-lg);
        padding: var(--vc-space-lg) 40px;
    }

    .btn-primary,
    .btn-secondary {
        font-size: var(--vc-font-base);
    }
}

/* ==========================================================================
   Desktop Responsive (1024px+)
   ========================================================================== */

@media (min-width: 1024px) {
    :root {
        --vc-canvas-height: 800px;
    }

    .virtual-candles-container {
        max-width: 1400px;
        padding: 0 var(--vc-space-xl);
    }
}

/* ==========================================================================
   Dark Mode Support
   ========================================================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --vc-color-bg: #1a1a1a;
        --vc-color-bg-secondary: #333;
        --vc-color-bg-hover: #444;
        --vc-color-text: #fff;
        --vc-color-text-secondary: #fff;
        --vc-color-text-muted: #999;
        --vc-color-border: #444;
    }

    .form-group input[type="text"],
    .form-group textarea,
    .form-group select {
        background: #2d2d2d;
        color: #fff;
    }
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid var(--vc-color-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   High-DPI / Retina Optimization
   ========================================================================== */

@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    #candle-canvas {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}