/* ====================================
   RESPONSIVE STYLES
   ==================================== */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    header {
        padding: var(--spacing-lg) var(--spacing-xl);
    }

    main {
        padding: 0 var(--spacing-xl) var(--spacing-xl) var(--spacing-xl);
    }

    .logo-separator {
        width: 100px;
    }

    .chat-card {
        height: calc(100vh - 220px);
    }

    .message {
        max-width: 90%;
    }
}

/* Mobile (max-width: 768px) */
@media (max-width: 768px) {
    header {
        padding: var(--spacing-md) var(--spacing-lg);
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .logo-container {
        flex: 1;
        min-width: 0;
    }

    .logo-separator {
        width: 60px;
        margin: 0 var(--spacing-sm);
    }

    .logo-text {
        font-size: 10px;
        letter-spacing: 1px;
    }

    .logo-container img,
    .logo-container svg {
        width: 28px;
        height: 28px;
    }

    .header-actions {
        width: 100%;
        justify-content: center;
    }

    main {
        padding: 0 var(--spacing-md) var(--spacing-md) var(--spacing-md);
    }

    .mode-toggle {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .mode-btn {
        width: 100%;
        text-align: center;
    }

    .chat-card {
        height: calc(100vh - 200px);
        min-height: 400px;
        border-radius: var(--radius-md);
    }

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

    .message {
        max-width: 95%;
    }

    .message-content {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 14px;
    }

    .welcome-message {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .welcome-message h2 {
        font-size: 22px;
    }

    .welcome-message p {
        font-size: 14px;
    }

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

    #message-input {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 10px 14px;
    }

    .send-btn {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    /* Iterations on mobile */
    .iterations {
        max-height: 300px;
    }

    .iteration {
        padding: var(--spacing-sm);
    }

    .iteration-value {
        font-size: 12px;
    }

    /* Modal on mobile */
    .modal-content {
        width: 95%;
        padding: var(--spacing-lg);
        max-height: 90vh;
    }

    .modal-title {
        font-size: 16px;
    }

    .preview-box {
        max-height: 150px;
    }

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

    .btn {
        width: 100%;
    }

    /* Footer */
    footer {
        padding: var(--spacing-md);
        font-size: 11px;
    }
}

/* Small mobile (max-width: 480px) */
@media (max-width: 480px) {
    .logo-container {
        flex-wrap: wrap;
    }

    .logo-separator {
        display: none;
    }

    .logo-text {
        width: 100%;
        margin-top: var(--spacing-xs);
        text-align: center;
    }

    .chat-card {
        border-radius: var(--radius-sm);
    }

    .message-content {
        font-size: 13px;
    }

    .email-input-container {
        flex-direction: column;
    }

    .add-email-btn {
        width: 100%;
    }
}

/* Landscape mode on mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .chat-card {
        height: calc(100vh - 120px);
    }

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

    .iterations {
        max-height: 200px;
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Dark mode preference (optional, respects system) */
@media (prefers-color-scheme: dark) {
    /* Already dark by default, but could add overrides here */
}

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

/* Print styles */
@media print {
    .bg-overlay,
    header,
    .mode-toggle,
    .input-container,
    .email-btn,
    footer {
        display: none;
    }

    .chat-card {
        border: none;
        height: auto;
    }

    .messages-container {
        overflow: visible;
    }

    .message {
        page-break-inside: avoid;
    }
}