/* ==========================================================================
   Kall AI: Phone Assistant Web Portal - Core Design System & Styles
   Aesthetics: Deep Telephonic Obsidian, Ultra-Violet & Indigo Neural Wave Glow,
               Modern Voice Intelligence Glassmorphism
   Brand: Kall AI: Phone Assistant by Hastradar Consultancy (https://hastradar.com)
   ========================================================================== */

:root {
    --bg-dark: #080b13;
    --bg-surface: #0f1523;
    --bg-surface-elevated: #161e31;
    --bg-card: rgba(15, 21, 35, 0.75);
    --bg-card-hover: rgba(22, 30, 49, 0.9);
    --bg-card-active: rgba(28, 38, 62, 0.95);

    --border-color: rgba(255, 255, 255, 0.08);
    --border-indigo: rgba(99, 102, 241, 0.35);
    --border-indigo-glow: rgba(99, 102, 241, 0.2);
    --border-cyan: rgba(6, 182, 212, 0.3);
    --border-violet: rgba(139, 92, 246, 0.35);

    /* Voice AI & Telephony Palette */
    --primary-indigo: #6366f1;
    --primary-indigo-hover: #4f46e5;
    --primary-indigo-glow: rgba(99, 102, 241, 0.35);
    --primary-violet: #8b5cf6;
    --primary-violet-hover: #7c3aed;
    --accent-cyan: #06b6d4;
    --accent-cyan-glow: rgba(6, 182, 212, 0.3);
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;

    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-accent: #a5b4fc;

    --font-family: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);

    --glass-blur: blur(18px);
    --radius-xs: 6px;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;

    --shadow-soft: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
    --shadow-indigo-glow: 0 0 35px -5px rgba(99, 102, 241, 0.35);
    --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-dark);
    color: var(--text-primary);
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection */
::selection {
    background: var(--primary-indigo);
    color: #ffffff;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: #1f293d;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary-indigo);
}

/* Atmospheric Ambient Glows */
.bg-glow-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-glow-1 {
    position: absolute;
    top: -15%;
    left: 15%;
    width: 650px;
    height: 650px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.18) 0%, rgba(139, 92, 246, 0.09) 45%, transparent 70%);
    filter: blur(85px);
    border-radius: 50%;
    animation: pulseSlow 14s ease-in-out infinite alternate;
}

.bg-glow-2 {
    position: absolute;
    bottom: 10%;
    right: 5%;
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.14) 0%, rgba(99, 102, 241, 0.08) 50%, transparent 70%);
    filter: blur(90px);
    border-radius: 50%;
    animation: pulseSlow 16s ease-in-out infinite alternate-reverse;
}

@keyframes pulseSlow {
    0% { transform: scale(1) translateY(0); opacity: 0.7; }
    50% { transform: scale(1.15) translateY(-30px); opacity: 1; }
    100% { transform: scale(0.95) translateY(20px); opacity: 0.6; }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    transition: background-color var(--transition-smooth), border-color var(--transition-smooth), backdrop-filter var(--transition-smooth);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background-color: rgba(8, 11, 19, 0.9);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom-color: var(--border-color);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1.1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
    color: var(--text-primary);
}

.nav-logo-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    border: 1.5px solid var(--border-indigo);
    box-shadow: 0 0 18px rgba(99, 102, 241, 0.3);
    background: var(--bg-surface);
}

.nav-brand-text {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-brand-badge {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    background: rgba(99, 102, 241, 0.15);
    color: #a5b4fc;
    border: 1px solid rgba(99, 102, 241, 0.35);
    margin-left: 0.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
    color: #a5b4fc;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.4rem;
    cursor: pointer;
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
    display: none;
    position: fixed;
    top: 76px;
    left: 0;
    width: 100%;
    background: rgba(8, 11, 19, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    z-index: 99;
}

.mobile-nav-drawer.active {
    display: block;
}

.mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.mobile-nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 600;
    padding: 0.5rem 0;
    display: block;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1.6rem;
    background: linear-gradient(135deg, var(--primary-indigo) 0%, var(--primary-violet) 100%);
    color: #ffffff;
    font-size: 0.92rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    text-decoration: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.6);
    background: linear-gradient(135deg, var(--primary-indigo-hover) 0%, var(--primary-violet-hover) 100%);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1.6rem;
    background: rgba(15, 21, 35, 0.85);
    color: var(--text-primary);
    font-size: 0.92rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-decoration: none;
    border: 1px solid var(--border-indigo);
    box-shadow: var(--shadow-soft);
    backdrop-filter: var(--glass-blur);
    transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    border-color: rgba(99, 102, 241, 0.7);
    background: rgba(22, 30, 49, 0.95);
}

/* Section Tag */
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.9rem;
    border-radius: var(--radius-full);
    background: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: #a5b4fc;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* Gradient Text */
.gradient-text-indigo {
    background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #38bdf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gradient-text-cyan {
    background: linear-gradient(135deg, #38bdf8 0%, #22d3ee 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Glass Panels */
.glass-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow-card);
    transition: border-color var(--transition-smooth), transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.glass-panel:hover {
    border-color: var(--border-indigo);
    transform: translateY(-4px);
    box-shadow: var(--shadow-indigo-glow);
}

/* Audio Waveform Indicator Animation */
.waveform-bars {
    display: inline-flex;
    align-items: flex-end;
    gap: 3px;
    height: 18px;
}

.waveform-bar {
    width: 3px;
    background: #818cf8;
    border-radius: 2px;
    animation: soundWave 1.2s ease-in-out infinite alternate;
}

.waveform-bar:nth-child(1) { height: 6px; animation-delay: 0.1s; }
.waveform-bar:nth-child(2) { height: 14px; animation-delay: 0.3s; }
.waveform-bar:nth-child(3) { height: 18px; animation-delay: 0.2s; }
.waveform-bar:nth-child(4) { height: 10px; animation-delay: 0.4s; }
.waveform-bar:nth-child(5) { height: 16px; animation-delay: 0.15s; }

@keyframes soundWave {
    0% { height: 4px; }
    50% { height: 18px; }
    100% { height: 8px; }
}

/* Carrier Code Pill */
.carrier-code-box {
    background: #090d16;
    border: 1px solid #1f293d;
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.85rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #38bdf8;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

/* Policy & Legal Content */
.policy-page {
    background-color: var(--bg-dark);
    min-height: 100vh;
}

.policy-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 8rem 1.5rem 5rem 1.5rem;
}

.policy-card {
    background: rgba(15, 21, 35, 0.7);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow-card);
}

.policy-card h1 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    color: #ffffff;
}

.policy-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    padding-bottom: 2rem;
    margin-bottom: 2.5rem;
    border-bottom: 1px solid var(--border-color);
}

.policy-meta span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.policy-card h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #ffffff;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.policy-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: #a5b4fc;
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
}

.policy-card p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.75;
    margin-bottom: 1.25rem;
}

.policy-card ul, .policy-card ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    color: var(--text-secondary);
}

.policy-card li {
    margin-bottom: 0.6rem;
    line-height: 1.7;
    font-size: 0.96rem;
}

.policy-card li strong {
    color: #ffffff;
}

.policy-card a {
    color: #818cf8;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition-fast);
}

.policy-card a:hover {
    color: #c084fc;
}

.policy-alert {
    background: rgba(99, 102, 241, 0.1);
    border-left: 4px solid var(--primary-indigo);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
}

.policy-alert p {
    margin-bottom: 0;
    color: #e2e8f0;
    font-size: 0.92rem;
}

/* Form Styles for Data Deletion & Contact */
.kall-form-group {
    margin-bottom: 1.5rem;
}

.kall-form-label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.kall-form-input, .kall-form-textarea, .kall-form-select {
    width: 100%;
    padding: 0.85rem 1.1rem;
    background: #0b0f19;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: #ffffff;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.kall-form-input:focus, .kall-form-textarea:focus, .kall-form-select:focus {
    outline: none;
    border-color: var(--primary-indigo);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

/* Footer */
.site-footer {
    background: #05070d;
    border-top: 1px solid var(--border-color);
    padding: 5rem 1.5rem 3rem 1.5rem;
    color: var(--text-secondary);
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 3.5rem;
    margin-bottom: 3.5rem;
}

.footer-col h4 {
    color: #ffffff;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-col a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: #a5b4fc;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .nav-toggle {
        display: block;
    }
    .footer-top {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    .policy-card {
        padding: 2rem 1.5rem;
    }
}