/* ============================================
   Scene Maker — Global Styles
   ============================================ */

:root {
    /* Colors — Dark Theme */
    --color-bg:          #0e0e14;
    --color-surface:     #18181f;
    --color-surface-alt: #1e1e28;
    --color-border:      #2a2a38;
    --color-border-light:#232330;
    --color-text:        #e4e4ec;
    --color-text-secondary: #9b9baf;
    --color-text-muted:  #6b6b80;
    --color-primary:     #7c7cff;
    --color-primary-hover:#9a9aff;
    --color-primary-text:#0e0e14;
    --color-accent:      #7c7cff;
    --color-error:       #f87171;
    --color-error-bg:    rgba(248, 113, 113, 0.1);
    --color-error-border:rgba(248, 113, 113, 0.25);
    --color-success:     #4ade80;
    --color-success-bg:  rgba(74, 222, 128, 0.1);

    /* Typography */
    --font-family:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs:   0.75rem;
    --font-size-sm:   0.8125rem;
    --font-size-base: 0.9375rem;
    --font-size-md:   1rem;
    --font-size-lg:   1.125rem;
    --font-size-xl:   1.5rem;
    --font-size-2xl:  1.875rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    /* Borders & Shadows */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;
    --shadow-sm:  0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md:  0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg:  0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    font-weight: 600;
}

a {
    color: var(--color-accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.625rem 1.25rem;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    user-select: none;
}

.btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

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

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

.btn-secondary {
    background-color: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-surface-alt);
    border-color: var(--color-text-muted);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-text-secondary);
    border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-surface-alt);
    color: var(--color-text);
}

.btn-sm {
    padding: 0.4375rem 0.875rem;
    font-size: var(--font-size-xs);
    border-radius: var(--radius-sm);
}

.btn-block {
    width: 100%;
}

.btn-text { display: inline-flex; align-items: center; gap: var(--space-2); }
.btn-loader { display: inline-flex; align-items: center; gap: var(--space-2); }

/* Spinner */
.spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255,255,255,0.15);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.btn-primary .spinner {
    border-color: rgba(0,0,0,0.2);
    border-top-color: var(--color-primary-text);
}

.btn-secondary .spinner {
    border-color: rgba(255,255,255,0.1);
    border-top-color: var(--color-text-secondary);
}

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

/* ============================================
   Form Elements
   ============================================ */
.form-group {
    margin-bottom: var(--space-5);
}

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

label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--space-2);
}

input[type="text"],
input[type="password"],
input[type="email"],
textarea,
select.select-input {
    width: 100%;
    padding: 0.6875rem 0.875rem;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
textarea:focus,
select.select-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(124, 124, 255, 0.15);
}

select.select-input {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239999aa' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.875rem center;
    padding-right: 2.5rem;
}

input::placeholder,
textarea::placeholder {
    color: var(--color-text-muted);
}

textarea {
    resize: vertical;
    line-height: 1.6;
}

.textarea-large {
    min-height: 120px;
    font-size: var(--font-size-md);
}

/* ============================================
   Error Message
   ============================================ */
.error-message {
    background-color: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid var(--color-error-border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    margin-top: var(--space-4);
}

/* ============================================
   Utility
   ============================================ */
.card-hidden {
    display: none;
}

/* Fade-in animation */
@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card-animate-in {
    animation: fadeSlideIn 0.4s ease forwards;
}