/* ============================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ============================================ */

/* ============================================
   TABLET (768px and up)
   ============================================ */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 24px;
        --spacing-2xl: 32px;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    h3 {
        font-size: 1.4rem;
    }

    /* Navigation */
    .navbar-container {
        padding: 0 var(--spacing-md);
        gap: var(--spacing-md);
    }

    .navbar-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(15, 15, 15, 0.98);
        border-bottom: 2px solid var(--accent-green);
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
    }

    .navbar-menu.active {
        display: flex;
    }

    .navbar-toggle {
        display: flex;
    }

    .nav-dropdown {
        position: static;
    }

    .dropdown-menu {
        position: static;
        opacity: 0;
        visibility: hidden;
        max-height: 0;
        overflow: hidden;
        background: rgba(0, 0, 0, 0.5);
        border: none;
        border-left: 3px solid var(--accent-green);
        margin-left: var(--spacing-md);
        margin-top: var(--spacing-sm);
    }

    .nav-dropdown.active .dropdown-menu {
        opacity: 1;
        visibility: visible;
        max-height: 300px;
    }

    .dropdown-item {
        padding: var(--spacing-md);
    }

    .navbar-right {
        gap: var(--spacing-md);
    }

    .balance-display {
        font-size: 0.9rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    /* Main Container */
    .main-container {
        padding: var(--spacing-lg) var(--spacing-md);
        min-height: calc(100vh - 150px);
    }

    /* Cards */
    .card {
        padding: var(--spacing-md);
    }

    /* Forms */
    input[type="text"],
    input[type="email"],
    input[type="number"],
    input[type="password"],
    textarea,
    select {
        padding: var(--spacing-md);
    }

    /* Footer */
    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    /* Modal */
    .modal-content {
        width: 95%;
        padding: var(--spacing-lg);
    }

    /* Toast */
    .toast {
        min-width: 250px;
        right: var(--spacing-md);
        bottom: var(--spacing-md);
    }
}

/* ============================================
   MOBILE (480px and down)
   ============================================ */
@media (max-width: 480px) {
    :root {
        --spacing-lg: 16px;
        --spacing-xl: 20px;
        --spacing-2xl: 24px;
    }

    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    h3 {
        font-size: 1.1rem;
    }

    h4 {
        font-size: 1rem;
    }

    p {
        font-size: 0.9rem;
    }

    /* Navigation */
    .navbar-container {
        flex-wrap: wrap;
        padding: 0 var(--spacing-md);
    }

    .brand-logo {
        font-size: 1.2rem;
    }

    .brand-logo span {
        display: none;
    }

    .navbar-right {
        width: 100%;
        justify-content: space-between;
        margin-top: var(--spacing-sm);
    }

    .balance-display {
        font-size: 0.8rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .balance-display span {
        display: none;
    }

    /* Main Container */
    .main-container {
        padding: var(--spacing-md);
    }

    /* Buttons */
    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 0.85rem;
        width: 100%;
    }

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

    /* Cards */
    .card {
        padding: var(--spacing-md);
    }

    .card-header {
        flex-direction: column;
        text-align: center;
    }

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

    input[type="text"],
    input[type="email"],
    input[type="number"],
    input[type="password"],
    textarea,
    select {
        padding: var(--spacing-md);
        font-size: 16px;
    }

    /* Footer */
    .footer-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .footer-section {
        text-align: center;
    }

    .footer-section h3 {
        font-size: 1.1rem;
    }

    /* Modal */
    .modal-content {
        width: 95%;
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
    }

    .modal-header h2 {
        font-size: 1.4rem;
    }

    .modal-footer {
        flex-direction: column;
    }

    .modal-footer .btn {
        width: 100%;
    }

    /* Toast */
    .toast {
        min-width: auto;
        width: calc(100% - var(--spacing-md) * 2);
        right: var(--spacing-md);
        bottom: var(--spacing-md);
        left: var(--spacing-md);
    }

    /* Compliance Banner */
    .banner-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }

    .banner-content span {
        font-size: 0.85rem;
    }
}

/* ============================================
   SMALL MOBILE (320px and down)
   ============================================ */
@media (max-width: 320px) {
    h1 {
        font-size: 1.4rem;
    }

    h2 {
        font-size: 1.1rem;
    }

    h3 {
        font-size: 0.95rem;
    }

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

    .toast {
        min-width: auto;
        width: calc(100% - 8px);
        right: 4px;
        left: 4px;
    }
}

/* ============================================
   LANDSCAPE MODE
   ============================================ */
@media (max-height: 600px) and (orientation: landscape) {
    .navbar {
        padding: var(--spacing-sm) 0;
    }

    .navbar-container {
        gap: var(--spacing-md);
    }

    .main-container {
        padding: var(--spacing-md) var(--spacing-lg);
        min-height: auto;
    }

    .card {
        padding: var(--spacing-md);
    }
}

/* ============================================
   LARGE SCREENS (1440px and up)
   ============================================ */
@media (min-width: 1440px) {
    .main-container {
        max-width: 1400px;
    }

    .navbar-container {
        max-width: 1400px;
    }

    .footer-container {
        max-width: 1400px;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .navbar,
    .compliance-banner,
    .footer,
    .btn,
    .modal-overlay {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    a {
        color: blue;
        text-decoration: underline;
    }

    .card {
        page-break-inside: avoid;
        border: 1px solid black;
        background: white;
    }
}

/* ============================================
   DARK MODE (if user prefers)
   ============================================ */
@media (prefers-color-scheme: dark) {
    body {
        background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 100%);
        color: var(--text-primary);
    }
}

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

/* ============================================
   HIGH CONTRAST MODE
   ============================================ */
@media (prefers-contrast: more) {
    :root {
        --accent-green: #00ff00;
        --accent-gold: #ffff00;
        --text-primary: #ffffff;
    }

    .card {
        border-width: 2px;
    }

    .btn {
        border-width: 2px;
    }
}