/* Modern CSS for Instagram Username Checker */
:root {
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    /* Instagram Brand Gradients */
    --ig-gradient-1: #833ab4;
    --ig-gradient-2: #fd1d1d;
    --ig-gradient-3: #fcb045;
    --ig-gradient-full: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d, #f56040, #f77737, #fcb045, #ffdc80);
    --ig-gradient-btn: linear-gradient(135deg, #833ab4 0%, #fd1d1d 50%, #fcb045 100%);
    --ig-gradient-hover: linear-gradient(135deg, #6c2d96 0%, #e01717 50%, #e59d35 100%);

    /* Theme colors - Dark Mode Default */
    --bg-body: #0d1117;
    --bg-card: rgba(22, 27, 34, 0.75);
    --bg-card-border: rgba(255, 255, 255, 0.1);
    --bg-input: #161b22;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);

    /* Status Colors */
    --status-available-bg: rgba(25, 135, 84, 0.15);
    --status-available-border: rgba(25, 135, 84, 0.4);
    --status-available-text: #2eca8b;

    --status-taken-bg: rgba(220, 53, 69, 0.15);
    --status-taken-border: rgba(220, 53, 69, 0.4);
    --status-taken-text: #ff6b7a;

    --status-unknown-bg: rgba(255, 193, 7, 0.15);
    --status-unknown-border: rgba(255, 193, 7, 0.4);
    --status-unknown-text: #ffca2c;
}

[data-bs-theme="light"] {
    --bg-body: #f8f9fa;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-border: rgba(0, 0, 0, 0.08);
    --bg-input: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #6c757d;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);

    --status-available-bg: #e6f9f0;
    --status-available-border: #a3e9c9;
    --status-available-text: #0d8a54;

    --status-taken-bg: #ffeef0;
    --status-taken-border: #fca5a5;
    --status-taken-text: #dc2626;

    --status-unknown-bg: #fffbeb;
    --status-unknown-border: #fcd34d;
    --status-unknown-text: #b45309;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6, .font-heading {
    font-family: var(--font-heading);
}

/* Text & Brand Gradient */
.text-gradient {
    background: var(--ig-gradient-full);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.brand-icon-box {
    width: 38px;
    height: 38px;
    border-radius: 12px;
    background: var(--ig-gradient-btn);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(225, 48, 108, 0.3);
}

.navbar-glass {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-color: var(--bg-card-border) !important;
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--bg-card-border);
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

/* Custom Search Box Component */
.checker-input-group {
    background: var(--bg-input);
    border: 2px solid var(--bg-card-border);
    border-radius: 16px;
    padding: 6px;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
    display: flex;
    align-items: center;
}

.checker-input-group:focus-within {
    border-color: #c13584;
    box-shadow: 0 0 0 4px rgba(193, 53, 132, 0.15);
}

.checker-input-prefix {
    padding: 0 16px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.checker-input {
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 500;
    padding: 12px 8px;
    width: 100%;
}

.checker-input:focus {
    outline: none;
    box-shadow: none;
}

.btn-gradient {
    background: var(--ig-gradient-btn);
    color: white;
    font-weight: 700;
    border: none;
    border-radius: 12px;
    padding: 12px 28px;
    font-size: 1rem;
    letter-spacing: 0.5px;
    transition: all 0.25s ease;
    box-shadow: 0 4px 15px rgba(225, 48, 108, 0.35);
    cursor: pointer;
    white-space: nowrap;
}

.btn-gradient:hover {
    background: var(--ig-gradient-hover);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(225, 48, 108, 0.45);
}

.btn-gradient:active {
    transform: translateY(0);
}

.btn-gradient:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Example Chips */
.example-chip {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--bg-card-border);
    color: var(--text-primary);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.example-chip:hover {
    background: var(--ig-gradient-btn);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

/* Result Box Cards */
.result-card {
    border-radius: 20px;
    padding: 28px;
    position: relative;
    overflow: hidden;
    animation: slideUpFade 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card.status-available {
    background: var(--status-available-bg);
    border: 2px solid var(--status-available-border);
}

.result-card.status-taken {
    background: var(--status-taken-bg);
    border: 2px solid var(--status-taken-border);
}

.result-card.status-unknown, .result-card.status-invalid {
    background: var(--status-unknown-bg);
    border: 2px solid var(--status-unknown-border);
}

.result-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.95rem;
}

.result-card.status-available .result-badge {
    background: rgba(25, 135, 84, 0.2);
    color: var(--status-available-text);
}

.result-card.status-taken .result-badge {
    background: rgba(220, 53, 69, 0.2);
    color: var(--status-taken-text);
}

.result-card.status-unknown .result-badge, .result-card.status-invalid .result-badge {
    background: rgba(255, 193, 7, 0.2);
    color: var(--status-unknown-text);
}

.result-username {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin: 14px 0 8px 0;
    word-break: break-word;
}

.result-message {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* Nav Tabs Styling */
.custom-nav-tabs .nav-link {
    color: var(--text-secondary);
    font-weight: 600;
    border: none;
    border-bottom: 3px solid transparent;
    padding: 12px 20px;
    border-radius: 0;
    background: transparent;
    transition: all 0.2s ease;
}

.custom-nav-tabs .nav-link:hover {
    color: var(--text-primary);
}

.custom-nav-tabs .nav-link.active {
    color: #e1306c;
    border-bottom-color: #e1306c;
    background: transparent;
}

/* Loading Pulse */
.loading-box {
    padding: 40px 20px;
    text-align: center;
}

.pulse-spinner {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px auto;
    border-radius: 50%;
    background: var(--ig-gradient-btn);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    animation: pulseGlow 1.2s infinite ease-in-out alternate;
}

@keyframes pulseGlow {
    from {
        transform: scale(0.9);
        box-shadow: 0 0 10px rgba(225, 48, 108, 0.4);
    }
    to {
        transform: scale(1.1);
        box-shadow: 0 0 30px rgba(225, 48, 108, 0.8);
    }
}

.extra-small {
    font-size: 0.78rem;
}

/* Suggestion Chips */
.suggestion-chip {
    background: rgba(225, 48, 108, 0.12);
    border: 1px solid rgba(225, 48, 108, 0.3);
    color: var(--text-primary);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
}

.suggestion-chip:hover {
    background: var(--ig-gradient-btn);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(225, 48, 108, 0.35);
}

/* Responsive Fixes */
@media (max-width: 576px) {
    .checker-input-group {
        flex-direction: column;
        gap: 8px;
        padding: 10px;
    }

    .checker-input-prefix {
        display: none;
    }

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

    .result-card {
        padding: 20px;
    }
}