@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Colores principales - Azul oscuro y turquesa */
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1419;
    --bg-tertiary: #1a1f2e;
    --panel-bg: linear-gradient(135deg, #0f1419 0%, #1a1f2e 100%);
    --panel-border: rgba(64, 224, 208, 0.2);

    /* Colores de acento - Turquesa y azul */
    --primary-color: #40e0d0;
    --primary-hover: #33b3a6;
    --secondary-color: #1e90ff;
    --secondary-hover: #1873cc;
    --accent-color: #00ffff;

    /* Colores de texto */
    --text-primary: #ffffff;
    --text-secondary: #b8c5d1;
    --text-muted: #7a8b99;
    --text-accent: #40e0d0;

    /* Colores de estado */
    --success-color: #00d4aa;
    --success-hover: #00b894;
    --warning-color: #fdcb6e;
    --warning-hover: #e17055;
    --danger-color: #fd79a8;
    --danger-hover: #e84393;

    /* Efectos y sombras */
    --shadow-primary: 0 8px 32px rgba(64, 224, 208, 0.15);
    --shadow-secondary: 0 4px 16px rgba(30, 144, 255, 0.1);
    --shadow-dark: 0 8px 32px rgba(0, 0, 0, 0.4);
    --glow-primary: 0 0 20px rgba(64, 224, 208, 0.3);
    --glow-secondary: 0 0 15px rgba(30, 144, 255, 0.2);

    /* Bordes y inputs */
    --border-color: rgba(64, 224, 208, 0.15);
    --border-hover: rgba(64, 224, 208, 0.3);
    --input-bg: rgba(26, 31, 46, 0.8);
    --input-border: rgba(64, 224, 208, 0.2);
    --input-focus: rgba(64, 224, 208, 0.4);

    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #40e0d0 0%, #1e90ff 100%);
    --gradient-secondary: linear-gradient(135deg, #00ffff 0%, #40e0d0 100%);
    --gradient-dark: linear-gradient(135deg, #0a0e1a 0%, #1a1f2e 100%);
}

* {
    box-sizing: border-box;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(64, 224, 208, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(30, 144, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 60%, rgba(0, 255, 255, 0.05) 0%, transparent 50%);
    margin: 0;
    padding: 20px;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 0;
}

/* Header */
.app-header {
    text-align: center;
    margin-bottom: 40px;
    background: var(--panel-bg);
    border-radius: 20px;
    border: 1px solid var(--panel-border);
    padding: 40px 30px;
    box-shadow: var(--shadow-primary), var(--shadow-dark);
    position: relative;
    overflow: hidden;
}

.app-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
}

.app-header h1 {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin: 0 0 15px 0;
    letter-spacing: -0.02em;
}

.app-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin: 0;
    font-weight: 400;
}

/* Paneles */
.panel {
    background: var(--panel-bg);
    padding: 35px;
    border-radius: 20px;
    border: 1px solid var(--panel-border);
    box-shadow: var(--shadow-primary), var(--shadow-dark);
    backdrop-filter: blur(10px);
    position: relative;
}

.panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-secondary);
    opacity: 0.5;
}

/* Sección superior - Editor y Vista Previa */
.top-section {
    margin-bottom: 30px;
}

.editor-preview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.editor-panel .input-field {
    min-height: 200px;
}

.preview-panel .live-preview {
    min-height: 200px;
}

/* Sección media - Controles en 2 columnas */
.app-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

/* Títulos */
.panel h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 25px 0;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: -0.01em;
}

.panel h2 i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.panel h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-accent);
    margin: 0 0 20px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.01em;
}

.panel h3 i {
    color: var(--secondary-color);
    font-size: 1rem;
}

/* Inputs y controles */
.input-field,
.control-option input,
.control-option select {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-primary);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    backdrop-filter: blur(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.input-field:focus,
.control-option input:focus,
.control-option select:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: var(--glow-primary);
    background: rgba(26, 31, 46, 0.95);
}

.input-field {
    width: 100%;
    resize: vertical;
    min-height: 160px;
    line-height: 1.6;
}

/* Vista previa */
.live-preview-area {
    margin-top: 25px;
}

.live-preview {
    min-height: 120px;
    padding: 25px;
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
    background: rgba(26, 31, 46, 0.3);
    backdrop-filter: blur(5px);
    transition: all 0.3s ease;
}

.live-preview:hover {
    border-color: var(--border-hover);
    background: rgba(26, 31, 46, 0.5);
}

/* Palabras interactivas */
.word {
    display: inline-block;
    cursor: pointer;
    padding: 4px 6px;
    margin: 0 2px;
    border-radius: 8px;
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.word:hover {
    transform: translateY(-3px) scale(1.05);
    color: var(--primary-color);
    text-shadow: var(--glow-primary);
}

.word.selected {
    background: linear-gradient(135deg, rgba(64, 224, 208, 0.15), rgba(30, 144, 255, 0.1));
    border: 2px solid var(--primary-color);
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

/* Controles */
.controls-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.control-group {
    padding: 25px;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background: rgba(26, 31, 46, 0.4);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.control-option {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.control-option label {
    flex: 1;
    min-width: 140px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}

.control-option label i {
    color: var(--text-accent);
    width: 16px;
}

.control-option input,
.control-option select,
.control-option button {
    flex: 2;
    min-width: 120px;
}

/* Botones */
.control-btn,
.style-btn,
.play-btn,
.reset-btn,
.generate-btn {
    padding: 12px 20px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.control-btn, .generate-btn {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-secondary);
}

.control-btn:hover, .generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-primary), var(--shadow-secondary);
}

.style-btn {
    background: var(--input-bg);
    color: var(--text-secondary);
    border: 1px solid var(--input-border);
    backdrop-filter: blur(10px);
}

.style-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: var(--glow-primary);
}

.play-btn {
    background: var(--gradient-secondary);
    color: var(--text-primary);
}

.play-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(0, 212, 170, 0.4);
}

.reset-btn {
    background: linear-gradient(135deg, var(--danger-color), var(--warning-color));
    color: var(--text-primary);
}

.reset-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 20px rgba(253, 121, 168, 0.4);
}

/* Inputs especiales */
.control-option input[type="color"] {
    padding: 4px;
    height: 40px;
    width: 60px;
    cursor: pointer;
    border-radius: 8px;
    border: 2px solid var(--input-border);
}

.control-option input[type="color"]:hover {
    border-color: var(--primary-color);
    box-shadow: var(--glow-primary);
}

.control-option input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    cursor: pointer;
    height: 20px;
    padding: 0;
}

.control-option input[type="range"]::-webkit-slider-runnable-track {
    background: var(--gradient-primary);
    border-radius: 10px;
    height: 6px;
}

.control-option input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    margin-top: -7px;
    width: 20px;
    height: 20px;
    background: var(--text-primary);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    box-shadow: var(--glow-primary);
}

.control-option #duration-value {
    min-width: 60px;
    text-align: center;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.9rem;
}

/* Botones de scope */
.scope-buttons {
    display: flex;
    gap: 8px;
    flex: 2;
    background: var(--input-bg);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid var(--input-border);
}

.scope-btn {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-muted);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 0.85rem;
}

.scope-btn.active {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--glow-primary);
    transform: translateY(-1px);
}

/* Checkbox */
.checkbox-option input[type="checkbox"] {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border: 2px solid var(--input-border);
    border-radius: 6px;
    background: var(--input-bg);
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-option input[type="checkbox"]:checked {
    background: var(--gradient-primary);
    border-color: var(--primary-color);
    box-shadow: var(--glow-primary);
}

.checkbox-option input[type="checkbox"]:checked::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--text-primary);
    font-size: 12px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Sección de código */
.app-footer {
    margin-top: 40px;
}

.code-blocks {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin-top: 25px;
}

.code-block {
    position: relative;
    background: var(--input-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.code-block h3 {
    color: var(--text-secondary);
    margin: 0;
    padding: 15px 20px;
    background: rgba(64, 224, 208, 0.05);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.code-block textarea {
    width: 100%;
    min-height: 200px;
    padding: 20px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.85rem;
    line-height: 1.5;
    resize: vertical;
}

.copy-btn {
    background: var(--input-bg);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    padding: 6px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.copy-btn:hover {
    background: var(--primary-color);
    color: var(--text-primary);
    box-shadow: var(--glow-primary);
}

.copy-btn.copied {
    background: var(--success-color);
    border-color: var(--success-color);
    color: var(--text-primary);
}

/* Utilidades */
.tip {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: 12px;
    padding: 12px;
    background: rgba(64, 224, 208, 0.05);
    border-radius: 8px;
    border-left: 3px solid var(--primary-color);
}

.divider {
    height: 1px;
    background: var(--gradient-primary);
    margin: 20px 0;
    opacity: 0.3;
}

.reset-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 20px;
}

.full-width-btn {
    width: 100%;
    margin-top: 15px;
}

/* Gradientes para inputs */
.gradient-inputs {
    display: flex;
    gap: 8px;
    flex: 2;
}

.shadow-inputs {
    display: flex;
    gap: 8px;
    flex: 2;
}

.shadow-inputs input {
    flex: 1;
    min-width: 60px;
}

.decoration-buttons {
    display: flex;
    gap: 8px;
    flex: 2;
}

.animation-buttons {
    display: flex;
    gap: 12px;
    margin-top: 15px;
}

.animation-buttons button {
    flex: 1;
}

/* Responsive */
@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding: 15px;
    }

    .panel {
        padding: 25px;
    }
}

@media (max-width: 900px) {
    .editor-preview-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .app-main {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .code-blocks {
        grid-template-columns: 1fr;
    }

    .control-option {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .control-option label {
        min-width: auto;
    }

    .reset-actions {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    .app-header {
        padding: 25px 20px;
    }

    .panel {
        padding: 20px;
    }

    .live-preview {
        font-size: 1.5rem;
        padding: 20px;
    }

    .gradient-inputs,
    .shadow-inputs,
    .decoration-buttons {
        flex-wrap: wrap;
    }

    .animation-buttons {
        flex-direction: column;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

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

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