/* CalcSolver - Responsive Styles */

/* Tablet and Desktop */
@media (min-width: 768px) {
    .main-content {
        padding: var(--spacing-xl);
    }

    .calculator-container {
        max-width: 420px;
    }

    .btn {
        height: 65px;
        font-size: 1.35rem;
    }

    .scientific-grid .btn {
        height: 55px;
    }

    .expression-display {
        font-size: 2rem;
    }

    .result-display {
        font-size: 3rem;
    }

    .history-panel {
        max-height: 250px;
    }
}

/* Large Desktop */
@media (min-width: 1200px) {
    .calculator-container {
        max-width: 480px;
    }

    .display-area {
        min-height: 160px;
    }

    .btn {
        height: 70px;
    }

    .scientific-grid .btn {
        height: 60px;
    }
}

/* Mobile - Landscape */
@media (max-width: 767px) and (orientation: landscape) {
    .main-content {
        padding: var(--spacing-sm);
    }

    .calculator-container {
        flex-direction: row;
        max-width: 100%;
        max-height: calc(100vh - 60px);
        overflow: hidden;
    }

    .display-area {
        min-height: auto;
        padding: var(--spacing-sm);
    }

    .expression-display {
        font-size: 1.25rem;
        min-height: 30px;
    }

    .result-display {
        font-size: 1.75rem;
    }

    .button-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .btn {
        height: 45px;
        font-size: 1rem;
    }

    .history-panel {
        max-height: 100%;
        min-width: 200px;
    }
}

/* Mobile - Portrait */
@media (max-width: 480px) {
    .navbar-container {
        height: 56px;
        padding: 0 var(--spacing-md);
    }

    .navbar-brand {
        font-size: 1.25rem;
    }

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

    .calculator-container {
        max-width: 100%;
        border-radius: var(--radius-lg);
    }

    .hero-section {
        padding: var(--spacing-lg) var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-description {
        font-size: 0.95rem;
        line-height: 1.7;
    }

    .feature-tags {
        gap: var(--spacing-sm);
    }

    .tag {
        font-size: 0.8rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .display-area {
        padding: var(--spacing-md);
        min-height: 120px;
    }

    .expression-display {
        font-size: 1.5rem;
        min-height: 35px;
    }

    .result-display {
        font-size: 2rem;
    }

    .mode-toggle {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .mode-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.8rem;
    }

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

    .button-grid {
        gap: var(--spacing-xs);
    }

    .btn {
        height: 55px;
        font-size: 1.1rem;
        border-radius: var(--radius-sm);
    }

    .scientific-grid .btn {
        height: 45px;
        font-size: 0.9rem;
    }

    .history-panel {
        max-height: 150px;
    }

    .history-header h3 {
        font-size: 0.8rem;
    }

    .history-item {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .history-expression {
        font-size: 0.8rem;
    }

    .history-result {
        font-size: 0.9rem;
    }
}

/* Very Small Screens */
@media (max-width: 360px) {
    .display-area {
        min-height: 100px;
        padding: var(--spacing-sm);
    }

    .expression-display {
        font-size: 1.25rem;
    }

    .result-display {
        font-size: 1.75rem;
    }

    .btn {
        height: 50px;
        font-size: 1rem;
    }

    .scientific-grid .btn {
        height: 40px;
        font-size: 0.8rem;
    }

    .angle-toggle {
        flex-direction: column;
        gap: 2px;
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn {
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .btn:hover {
        transform: none;
        box-shadow: 0 2px 4px var(--shadow-color);
    }

    .btn:active {
        transform: scale(0.95);
    }
}

/* High DPI Screens */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .btn {
        border: 0.5px solid rgba(0, 0, 0, 0.1);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .btn,
    .mode-btn,
    .angle-btn,
    .icon-btn {
        transition: none;
    }

    .btn::after {
        display: none;
    }
}

/* Print Styles */
@media print {
    body {
        background: white;
    }

    .calculator-container {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .btn {
        display: none;
    }

    .history-panel {
        display: none;
    }
}

/* Safe Area Insets for Modern Mobile Devices */
@supports (padding: max(0px)) {
    .navbar-container {
        padding-top: max(0px, env(safe-area-inset-top));
    }

    .calculator-container {
        padding-bottom: max(var(--spacing-md), env(safe-area-inset-bottom));
    }
}

/* Dark Mode Color Scheme Preference */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-primary: #000000;
        --bg-secondary: #1c1c1e;
        --bg-tertiary: #2c2c2e;
        --text-primary: #ffffff;
        --text-secondary: #98989d;
        --text-placeholder: #48484a;
        --border-color: #3a3a3c;
        --shadow-color: rgba(0, 0, 0, 0.3);

        --btn-number-bg: #333336;
        --btn-number-hover: #444447;
    }
}

/* Calculator Info Section Responsive Styles */
@media (max-width: 1024px) {
    .calculator-info-section {
        width: 90%;
    }

    .usage-guide-section {
        width: 90%;
    }
}

@media (max-width: 768px) {
    .calculator-info-section {
        width: 100%;
        grid-template-columns: 1fr;
        padding: var(--spacing-md);
    }

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

    .info-title {
        font-size: 1rem;
    }

    .info-text {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .calculator-info-section {
        padding: var(--spacing-sm);
        margin-top: var(--spacing-md);
    }

    .feature-item {
        font-size: 0.75rem;
    }

    .audience-item {
        font-size: 0.8rem;
    }
}

/* Usage Guide Responsive Styles */
@media (max-width: 1200px) {
    .usage-guide-list {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 900px) {
    .usage-guide-section {
        width: 100%;
    }

    .usage-guide-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .usage-guide-section {
        padding: var(--spacing-md);
    }

    .usage-guide-title {
        font-size: 1.25rem;
    }

    .usage-guide-list {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

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

    .usage-icon {
        font-size: 1.25rem;
        min-width: 36px;
        height: 36px;
    }

    .usage-name {
        font-size: 0.9rem;
    }

    .usage-desc {
        font-size: 0.75rem;
    }
}

@media (max-width: 480px) {
    .usage-guide-section {
        padding: var(--spacing-sm);
        margin-top: var(--spacing-md);
    }

    .usage-guide-title {
        font-size: 1.1rem;
        margin-bottom: var(--spacing-md);
    }
}