/* -------------------------------------------------------------
 * Sentinel Layer - Core Design System & Styling
 * Colors, typography, spacing, and layout.
 * ------------------------------------------------------------- */

/* Variables & Design Tokens */
:root {
    /* Color System */
    --color-bg-main: #000513;
    --color-bg-secondary: #141936;
    --color-primary-indigo: #4A54E8;
    --color-soft-blue-glow: #7183EE;
    --color-white-text: #F2F3F5;
    --color-muted-gray: #A4A8BA;
    --color-slate-accent: #6F7394;
    --color-dark-border: #404566;

    /* Fonts */
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--color-bg-main);
    color: var(--color-white-text);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
}

/* Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin-right: auto;
    margin-left: auto;
    padding-right: 24px;
    padding-left: 24px;
}

/* Background System */
.bg-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background-color: var(--color-bg-main);
    overflow: hidden;
    pointer-events: none;
}

.bg-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('assets/sentinel_bg.png?v=2');
    background-size: cover;
    background-position: center;
    opacity: 0.45; /* Subtle and premium */
    filter: saturate(0.8) contrast(1.1);
    z-index: -1;
}

.bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(20, 25, 54, 0.35) 0%, var(--color-bg-main) 100%);
    z-index: 0;
}

/* Subtle glowing abstract nodes representing Session Security Layers */
.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.12;
    pointer-events: none;
    z-index: 1;
}

.bg-glow-1 {
    top: 15%;
    left: 15%;
    width: 450px;
    height: 450px;
    background: var(--color-primary-indigo);
    animation: float-glow 15s infinite alternate;
}

.bg-glow-2 {
    bottom: 10%;
    right: 15%;
    width: 500px;
    height: 500px;
    background: var(--color-soft-blue-glow);
    animation: float-glow 20s infinite alternate-reverse;
}

@keyframes float-glow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(40px, -40px) scale(1.1); }
}

/* Header Navigation */
.app-header {
    width: 100%;
    padding: 28px 0;
    z-index: 10;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--color-white-text);
}

.logo svg {
    filter: drop-shadow(0 0 10px rgba(113, 131, 238, 0.35));
    transition: var(--transition-smooth);
}

.logo:hover svg {
    transform: rotate(5deg) scale(1.05);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 23px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-text span {
    color: var(--color-soft-blue-glow);
    font-weight: 400;
}

/* Pill Button Style */
.pill-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    font-family: var(--font-body);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--color-primary-indigo);
    color: var(--color-white-text);
    padding: 12px 28px;
    font-size: 14px;
    border: 1px solid rgba(113, 131, 238, 0.2);
    box-shadow: 0 4px 16px rgba(74, 84, 232, 0.2);
}

.btn-primary:hover {
    background-color: var(--color-soft-blue-glow);
    box-shadow: 0 4px 20px rgba(113, 131, 238, 0.45);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(1px);
}

/* Main Content Layout */
.main-content {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 0;
}

.hero-section {
    width: 100%;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    max-width: 840px;
}

/* Launching Soon Badge */
.badge-container {
    margin-bottom: 24px;
    animation: fade-in-down 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    background: rgba(20, 25, 54, 0.45);
    border: 1px solid rgba(64, 69, 102, 0.6);
    backdrop-filter: blur(12px);
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-white-text);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background-color: var(--color-soft-blue-glow);
    border-radius: 50%;
    margin-right: 8px;
    box-shadow: 0 0 8px var(--color-soft-blue-glow);
    animation: blink 2.5s infinite ease-in-out;
}

@keyframes blink {
    0%, 100% { opacity: 0.4; transform: scale(0.9); }
    50% { opacity: 1; transform: scale(1.1); }
}

/* Title & Subtitle */
.hero-title {
    font-family: var(--font-heading);
    font-size: 60px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.025em;
    color: var(--color-white-text);
    margin-bottom: 20px;
    animation: fade-in 1s cubic-bezier(0.16, 1, 0.3, 1) 0.1s forwards;
    opacity: 0;
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-muted-gray);
    max-width: 680px;
    margin-bottom: 38px;
    animation: fade-in 1s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
    opacity: 0;
}

/* Email Waitlist Form */
.form-wrapper {
    width: 100%;
    max-width: 580px;
    margin-bottom: 16px;
    animation: fade-in 1s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
    opacity: 0;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.pill-form {
    display: flex;
    align-items: center;
    background-color: #FFFFFF;
    padding: 7px;
    border-radius: 9999px;
    width: 100%;
    box-shadow: 0 16px 36px rgba(0, 5, 19, 0.65), 0 0 0 1px rgba(64, 69, 102, 0.15);
    transition: var(--transition-smooth);
}

.pill-form:focus-within {
    box-shadow: 0 16px 36px rgba(0, 5, 19, 0.75), 
                0 0 20px rgba(113, 131, 238, 0.25), 
                0 0 0 1px var(--color-soft-blue-glow);
    transform: translateY(-1px);
}

.input-group {
    flex: 1;
    display: flex;
    align-items: center;
    padding-left: 20px;
}

.pill-form input {
    width: 100%;
    border: none;
    background: transparent;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 500;
    color: var(--color-bg-main);
    outline: none;
    padding: 10px 0;
}

.pill-form input::placeholder {
    color: var(--color-slate-accent);
    opacity: 0.9;
}

.btn-submit {
    background-color: var(--color-primary-indigo);
    color: var(--color-white-text);
    border: none;
    border-radius: 9999px;
    padding: 14px 28px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 12px rgba(74, 84, 232, 0.25);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-submit:hover {
    background-color: #3b45db; /* Subtle dark tint of primary indigo */
    box-shadow: 0 4px 16px rgba(74, 84, 232, 0.4), 0 0 12px rgba(113, 131, 238, 0.3);
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.form-feedback {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 0 auto;
    font-size: 14.5px;
    font-weight: 500;
    color: #10B981;
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px 0 rgba(0, 5, 19, 0.37), 0 0 10px rgba(16, 185, 129, 0.05);
    opacity: 0;
    transform: translateY(-8px) scale(0.98);
    pointer-events: none;
    transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1), transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), max-height 0.35s ease, margin 0.35s ease, padding 0.35s ease;
    max-height: 0;
    overflow: hidden;
    padding: 0 24px;
    border-top-width: 0;
    border-bottom-width: 0;
}

.form-feedback.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
    max-height: 80px;
    margin-top: 20px;
    margin-bottom: 8px;
    padding: 12px 24px;
    border-top-width: 1px;
    border-bottom-width: 1px;
}

.success-icon {
    flex-shrink: 0;
    stroke: #10B981;
}

.spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #FFF;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Waitlist Supporting Text */
.waitlist-support-text {
    font-size: 13.5px;
    color: var(--color-muted-gray);
    margin-top: 8px;
    margin-bottom: 54px;
    animation: fade-in 1s cubic-bezier(0.16, 1, 0.3, 1) 0.35s forwards;
    opacity: 0;
}

/* Founder Contacts Panel */
.founder-contacts {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 500px;
    border-top: 1px solid rgba(64, 69, 102, 0.25);
    padding-top: 32px;
    animation: fade-in 1s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards;
    opacity: 0;
}

.contacts-title {
    font-family: var(--font-heading);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-slate-accent);
    margin-bottom: 22px;
}

.founders-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 36px;
    margin-bottom: 22px;
    width: 100%;
}

.founder-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.founder-role {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-slate-accent);
}

.founder-name {
    font-size: 15.5px;
    font-weight: 600;
    color: var(--color-white-text);
}

.founder-phone {
    font-size: 13px;
    color: var(--color-muted-gray);
    text-decoration: none;
    transition: var(--transition-smooth);
    border-bottom: 1px solid transparent;
    padding-bottom: 1px;
}

.founder-phone:hover {
    color: var(--color-soft-blue-glow);
    border-color: rgba(113, 131, 238, 0.3);
}

.contact-divider {
    width: 1px;
    height: 44px;
    background-color: var(--color-dark-border);
    opacity: 0.5;
}

.founder-note {
    font-size: 12.5px;
    color: var(--color-slate-accent);
    line-height: 1.55;
    max-width: 440px;
    margin: 0 auto;
}

/* App Footer */
.app-footer {
    width: 100%;
    padding: 38px 0;
    border-top: 1px solid rgba(64, 69, 102, 0.15);
    background-color: rgba(0, 5, 19, 0.5);
    backdrop-filter: blur(10px);
    z-index: 5;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.footer-launch-tag {
    font-size: 11px;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--color-slate-accent);
}

.footer-pillars {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 13px;
    color: var(--color-muted-gray);
    font-weight: 500;
}

.dot-separator {
    color: var(--color-slate-accent);
    opacity: 0.6;
}

.footer-copyright {
    font-size: 12px;
    color: var(--color-slate-accent);
    margin-top: 4px;
}

/* Animations */
@keyframes fade-in {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in-down {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* -------------------------------------------------------------
 * Responsive Styling & Breakpoints
 * ------------------------------------------------------------- */
@media (max-width: 768px) {
    .app-header {
        padding: 20px 0;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .header-btn {
        padding: 10px 20px;
        font-size: 13px;
    }
    
    .hero-title {
        font-size: 38px;
        line-height: 1.2;
    }
    
    .mobile-break {
        display: none;
    }
    
    .hero-subtitle {
        font-size: 15px;
        margin-bottom: 30px;
        padding: 0 10px;
    }
    
    .pill-form {
        flex-direction: column;
        border-radius: 24px;
        padding: 12px;
        gap: 12px;
    }
    
    .input-group {
        padding-left: 8px;
        width: 100%;
    }
    
    .pill-form input {
        text-align: center;
    }
    
    .btn-submit {
        width: 100%;
        padding: 14px 20px;
    }
    
    .waitlist-support-text {
        margin-bottom: 40px;
    }
    
    .founders-row {
        flex-direction: column;
        gap: 24px;
    }
    
    .contact-divider {
        display: none;
    }
    
    .footer-pillars {
        flex-direction: column;
        gap: 6px;
    }
    
    .dot-separator {
        display: none;
    }
}

/* =========================
   FULLSCREEN LANDING PAGE
========================= */

html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

html::-webkit-scrollbar,
body::-webkit-scrollbar {
    display: none;
}

/* =========================
   PAGE LAYOUT
========================= */

body {
    min-height: 100vh;
}

.main-content {
    height: 100vh;
}

.hero-section {
    min-height: 100vh;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* =========================
   REMOVE FOOTER SPACING
========================= */

main,
.main-content,
.hero-section {
    margin-bottom: 0;
    padding-bottom: 0;
}

@media (max-height: 750px) and (min-width: 769px) {
    .main-content {
        padding: 20px 0;
    }
    .waitlist-support-text {
        margin-bottom: 24px;
    }
    .founder-contacts {
        padding-top: 20px;
        margin-top: 0;
    }
}