/* ===================================
   Alterspective Email Signature Generator
   Main Stylesheet
   Version: 2.0
   =================================== */

/* ===================================
   1. RESET & BASE STYLES
   =================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #17232D 0%, #075156 100%);
    min-height: 100vh;
    padding: 40px 20px;
}

/* ===================================
   2. LAYOUT
   =================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 300;
}

.header .version {
    font-size: 0.9em;
    opacity: 0.8;
    margin-bottom: 10px;
}

.header p {
    font-size: 1.1em;
    opacity: 0.9;
}

.main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

/* ===================================
   3. CARDS
   =================================== */

.card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.card h2 {
    color: #17232D;
    font-size: 1.5em;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid #ABDD65;
}

/* ===================================
   4. FORMS
   =================================== */

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #17232D;
    font-weight: 500;
    font-size: 0.95em;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 1em;
    transition: border-color 0.3s;
    font-family: 'Segoe UI', sans-serif;
}

.form-group input:focus {
    outline: none;
    border-color: #2C8248;
}

.form-group .hint {
    font-size: 0.85em;
    color: #666;
    margin-top: 5px;
}

/* ===================================
   5. BUTTONS
   =================================== */

.btn {
    background: #075156;
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 12px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: all 0.2s ease;
    box-shadow: 0 2px 6px rgba(23,35,45,0.20), 0 2px 2px rgba(23,35,45,0.08);
}

.btn:hover {
    background: #064449;
    box-shadow: 0 4px 12px rgba(23,35,45,0.25), 0 2px 4px rgba(23,35,45,0.12);
    transform: translateY(-1px);
}

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

.btn-secondary {
    background: #2C8248;
}

.btn-secondary:hover {
    background: #236b39;
    transform: translateY(-1px);
}

.action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 20px;
}

/* ===================================
   6. PREVIEW & MESSAGES
   =================================== */

#preview {
    min-height: 200px;
    background: #f8f8f8;
    border-radius: 8px;
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.success-message {
    background: #ABDD65;
    color: #17232D;
    padding: 12px 20px;
    border-radius: 6px;
    margin-top: 15px;
    font-weight: 500;
    display: none;
}

/* ===================================
   7. SPECS CARD
   =================================== */

.specs-card {
    background: #E5EEEF;
    border-left: 4px solid #075156;
    padding: 15px;
    margin-top: 20px;
    border-radius: 12px;
}

.specs-card h3 {
    color: #17232D;
    font-size: 1em;
    margin-bottom: 10px;
}

.specs-card ul {
    list-style: none;
    font-size: 0.9em;
    color: #333;
}

.specs-card li {
    padding: 3px 0;
}

.specs-card li::before {
    content: "✓ ";
    color: #075156;
    font-weight: bold;
    margin-right: 5px;
}

/* ===================================
   8. INSTALLATION INSTRUCTIONS
   =================================== */

.install-instructions {
    margin-top: 25px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #ABDD65;
    display: none;
}

.install-instructions.show {
    display: block;
}

.install-instructions h3 {
    color: #17232D;
    font-size: 1.2em;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.os-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

.os-tab {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 0.95em;
    font-weight: 500;
    color: #666;
    transition: all 0.3s ease;
}

.os-tab:hover {
    color: #17232D;
    background: rgba(171, 221, 101, 0.1);
}

.os-tab.active {
    color: #2C8248;
    border-bottom-color: #ABDD65;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.install-instructions ol {
    margin: 15px 0;
    padding-left: 25px;
}

.install-instructions li {
    margin-bottom: 12px;
    line-height: 1.6;
    color: #333;
}

.install-instructions strong {
    color: #2C8248;
    font-weight: 600;
}

.install-instructions .note {
    background: #fff;
    border-left: 3px solid #FFA500;
    padding: 12px;
    margin: 15px 0;
    border-radius: 4px;
    font-size: 0.9em;
}

.install-instructions .tip {
    background: #e8f5e9;
    border-left: 3px solid #2C8248;
    padding: 12px;
    margin: 15px 0;
    border-radius: 4px;
    font-size: 0.9em;
}

.install-instructions .subsection {
    margin: 20px 0 15px 0;
    font-weight: 600;
    color: #17232D;
    font-size: 1.05em;
}

.help-link {
    display: inline-block;
    margin-top: 15px;
    color: #2C8248;
    text-decoration: underline;
    cursor: pointer;
    font-size: 0.9em;
}

.help-link:hover {
    color: #ABDD65;
}

/* ===================================
   9. RESPONSIVE - MOBILE
   =================================== */

@media (max-width: 768px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
}