/**
 * Main CSS - Core styles for Plooran/SeaWidth.ai
 */

/* ===== CSS Variables ===== */
:root {
    /* Colors - Dark Theme */
    --color-primary: #4A9EFF;
    --color-primary-dark: #2E7FD9;
    --color-primary-light: #6BB3FF;
    --color-primary-ultra-light: #1a1f3a;

    --color-secondary: #00D4FF;
    --color-secondary-dark: #00A3CC;

    --color-accent: #00D4FF;

    --color-success: #28a745;
    --color-error: #DC2626;
    --color-warning: #FFC107;
    --color-info: #17A2B8;

    --color-white: #e0e0e0;
    --color-black: #0a0e27;

    --color-gray-50: #1a1f3a;
    --color-gray-100: #1e2340;
    --color-gray-200: #252a45;
    --color-gray-300: #3a4060;
    --color-gray-400: #6a7090;
    --color-gray-500: #9a9fb5;
    --color-gray-600: #b0b5c5;
    --color-gray-700: #c0c5d5;
    --color-gray-800: #d0d5e0;
    --color-gray-900: #e0e0e0;

    /* Typography */
    --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;

    /* Layout */
    --header-height: 70px;
    --container-max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-black);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Prevent horizontal scroll on mobile */
    overflow-x: hidden;
    /* Safari iOS: Enable momentum scrolling */
    -webkit-overflow-scrolling: touch;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-900);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-primary-dark);
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    /* Mobile: Ensure minimum touch target size (44x44px for iOS) */
    min-height: 44px;
    min-width: 44px;
    /* Remove tap highlight on mobile */
    -webkit-tap-highlight-color: transparent;
    /* Prevent text selection on mobile */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    /* Prevent touch callout on iOS */
    -webkit-touch-callout: none;
}

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

.btn-primary {
    color: #0a0e27 !important;
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-primary:hover:not(:disabled) {
    color: #0a0e27 !important;
    background-color: #0a0e27;
    border-color: var(--color-primary);
}

.btn-primary:active:not(:disabled),
.btn-primary:focus:not(:disabled) {
    color: #0a0e27 !important;
    background-color: #0a0e27;
    border-color: var(--color-primary);
}

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

.btn-outline:hover:not(:disabled) {
    color: #0a0e27;
    background-color: var(--color-primary);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-secondary-dark);
}

.btn-small {
    padding: 0.375rem 0.75rem;
    font-size: var(--font-size-sm);
}

.btn-large {
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-lg);
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
}

.form-input,
.form-textarea,
.form-select {
    display: block;
    width: 100%;
    padding: 0.625rem 0.875rem;
    /* Safari iOS: Prevent zoom on focus by ensuring font-size >= 16px */
    font-size: max(16px, var(--font-size-base));
    font-family: inherit;
    line-height: 1.5;
    color: var(--color-gray-900);
    background-color: rgba(10, 14, 39, 0.5);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--border-radius-md);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
    /* Improve touch interaction on mobile */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: var(--color-error);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-error);
}

/* ===== Cards ===== */
.card {
    background: rgba(26, 31, 58, 0.8);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid rgba(74, 158, 255, 0.2);
}

/* ===== Utilities ===== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.text-muted {
    color: var(--color-gray-500);
}

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

.text-success {
    color: var(--color-success);
}

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

/* ===== Alerts ===== */
.alert {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
}

.alert-error {
    color: #721c24;
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border: 1px solid #ffeaa7;
}

.alert-info {
    color: #0c5460;
    background-color: #d1ecf1;
    border: 1px solid #bee5eb;
}

/* ===== Spinner ===== */
.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ===== Profile Dropdown ===== */
.profile-dropdown {
    position: relative;
    display: none;
}

.profile-dropdown.active {
    display: block;
}

.profile-trigger {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 8px;
    transition: background-color 0.2s ease;
    background: transparent;
    border: none;
}

.profile-trigger:hover {
    background-color: rgba(0, 102, 204, 0.05);
}

.profile-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    font-size: 0.95rem;
    flex-shrink: 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.profile-name {
    font-weight: var(--font-weight-medium);
    font-size: 0.95rem;
    color: var(--color-gray-900);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dropdown-arrow {
    width: 18px;
    height: 18px;
    color: var(--color-gray-500);
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.profile-dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    min-width: 200px;
    background: #1a1f3a;
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    padding: 0.5rem;
    display: none;
    z-index: 1000;
    animation: slideDown 0.2s ease;
    border: 1px solid rgba(74, 158, 255, 0.3);
}

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

.profile-dropdown.active .dropdown-menu {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--color-gray-700);
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
}

.dropdown-item:hover {
    background-color: rgba(0, 102, 204, 0.08);
    color: var(--color-primary);
}

.dropdown-item svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--color-gray-200);
    margin: 0.5rem 0;
}